That would be my dad's 5.0. He's going nuts with that thing. Last we talked he just finished fabricating a K-member and front fenders to move his engine back multiple inches, rebuilt his carb to sit sideways to eliminate fuel starvation in corners, and fabricated a baffled oil pan with wings to bring his capacity way up. He's in Arizona, so his oil situation has to be just so.
In other news, I bought an Exedy clutch kit that can with an FX flywheel off eBay. Hoping this is as good as I have read and won't regret getting a separate flywheel that's a little nicer. I decided not to get a lightened one in order to keep rotating mass near stock to keep inertia up at idle and reduce the tendency to lug down the engine from stop, even though I expect higher-than-stock torque numbers.
I also just bought a set of brand new OEM rocker arms. Let me tell you about my little rocker-arm-research saga…
first I was about to go insane and buy a set of Kameari rocker arms off RHD for over $600. Then I looked into it and found a couple of places where people recommend that the rocker arm be softer than the cam in order to reduce cam wear. This sounds logical at first, but then I realized there is a reason Nissan brazed on different metal. The three pieces in question (lifter, cam, and arm) are all different hardnesses and there is some intention in having different metallurgy for each contact point. So the ZCC CNCed ones are a no go from the start and the Kameari don't provide enough information to verify that they are or are not going to match with this design intention.
I had been reading that the OEM arms are super hard to find, so I looked into sending the 36 arms I have from my three heads in to have them done at Rocker Arms Unlimited, which Madkaw had recommended as superior on another forum. This would cost me $350 or so including USPS Priority Mail in two directions. Just having 12 done would be $217.
After a little research I found new OEM arms at Z Car Depot for 36.99. This came to $460 after shipping and seemed like a pretty good price until I realized that if they can get them brand new on a regular basis, they are probably available from Nissan. I really like the guys over there, but every time I go to buy something from them I either find it for less somewhere else, or the shipping expense pushes me toward something else.
I dug around a little more and finally found a few part numbers (13257-W0300,13258-21002, and 13257-21000) on the Nissan parts site. A quick google search and, lo and behold!, Courtesy Nissan has them for $29.13. The little secret is that they came on 1984 Maximas and have not been discontinued yet. All told $363.53 shipped.
I chose to go the route of 12 brand new OEM rocker arms from Courtesy Nissan for about 50% more than the junk on eBay or having the ones I have reground, and $100 less than Z Car Depot. I still have my pile of 36 arms that I can send to Rocker Arms Unlimited if I want to have spares or sell them, and I don't have to worry about whether or not I got a good grind for my initial application.