I think one can be excused for not owning a $2,000 to $6,000 work surface in their home workshop. We're Datsun owners after all. I also think we can discuss precision and ways to achieve it regardless of the tools used as long as we achieve it, right? We will show our work from now on, though, because you are correct that if this is going to function as an accurate resource for others it needs as much information as possible. --- So, I made some more progress on our build choices today by choosing and ordering my camshaft! We talked to and researched tons of places: Isky, Colt, Delta, Comp Cams, Web, Schneider, etc. etc. etc. Here are the highlights that led to my decision: Isky: I found lots of really great information, including a huge history of the firm's background in developing Z cams in the 70s, on the various forums, and was 100% sold on them. Initially Ron was quick to respond so we sent three cam shafts to them for evaluation last fall, and then... nothing. Silence. They had them for months and we just could not make contact to get the work done nor the grind profile chosen. We finally got through and after trying to move it forward felt like they just didn't want to do the job, so we requested the cams returned. Supposedly they went into the mail today. So then we looked at the others and I dug around on the forums. After talking to a ton of people about the right numbers for this engine I landed on either the 260 or 280 grinds from Comp Cams. Then I started digging into that and found a LOT of negative feedback in various Datsun and other forums, specifically that the metal is really soft and tends to fragment. Since it seems all of the new billets come from one supplier, this put me back on the regrind path. In the process of finding this out I had found out about Colt. I called them up and had a weird conversation that was dismissive of my project. I've read that people have had great results but I just didn't get a great vibe, plus the guy's insistence on switching to roadster springs put me off. He might be right, but he just wanted me to take his word for it. I couldn't find enough information about their product to do that, other that it's a solution to get around the coil bind his high-lift causes with factory springs and in-machines heads. The same day I started talking to Delta and had a great experience. John was always available to talk to me (when their phone system wasn't crashing), answered all of my questions with tons of detail, and even discussed how I might go with other grinders to get what I was after. The fact that he wanted me to have the best grind for my needs whether it was his or not meant a lot, and after looking at his grind against several other ones I was considering I felt that if his numbers are right then I will be in good shape. The open question is that last bit. The only negative criticism I've seen of Delta (other than other grinders talking trash) is that the numbers don't match what they advertise, possibly due to being based on a 1.6 rocker ration rather than the 1.429 I've seen as spec. This feedback was about 12 years ago, and it seems that they've figure it out since. The feedback I've seen more recently seems to be really positive. Oh, and they supplied the cam. I didn't have to send one. So I ordered the 268 grind with .430 lift. I don't have the rest of the specs readily available but I'll post them when I get the cam, provided it is correct and we don't have to adjust anything. I have good feelings about this. Great service (so far), great price, no mailing cams around, and a profile I feel good about. Now we wait to see how it turns out. If it isn't 100% awesome, I'll run it to break in the engine and upgrade after the car is done if I'm bored.