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The automatic pull up dive brakes must have failed when the JU-87 pilot passed out.

I changed my stereo setup because I was unsatisfied with the sound coming from the underdash speakers I had previously installed. I dumped these and installed a set of Polk Audio 5.25" DB522 coaxial speakers in Derek's kick panel speaker pods. I also substituted the Miura amplifier I had placed behind the Retrosound Radio for a much higher quality Kenwood KAC-M3004. It is slightly larger than the Miura but it's still relatively hidden under the carpet over the transmission hump (see pics). Additional to the front Polk Audio speakers I have Infinity Kappa 4" coaxial speakers under the quarter windows in the stock position for speakers in the 280Z and Infinity Kappa 6x9" speakers (wired only as woofers with the tweeters disconnected) in the re-upholstered MSA speaker box in the rear deck. I installed Boom Mat soft speaker baffles behind all 6 speakers. It's arguably the best sounding car system I've had. The circle identifies the amplifier location, with a slight bump on the carpet. The crossovers have been disconnected and only the base baffles are wired to the amp, rendering the rear Infinity Kappa 6x9s as very effective woofers. I also did some work on the Retrosound radio faceplate by adding a ABS overlay with the same texture as the OEM Datsun center console material and chrome pinstriping. I'm still searching for someone who will laser engrave the letters on the faceplate to further mimic the original. The USB remote ports are in the glovebox and in the center console. I tried to make everything look as stock as possible even though the MSA rear deck enclosure is quite obvious (but supplies the bass). The front kick panel speaker pods are a truly excellent product (shout out to Derek for amazing work) and are greatly responsible for the improvement in sound. All the different components are nicely balanced.

your vacuum is highest under deceleration. it sounds like oil getting past the valve seals

Pressed for time so just gonna throw some photos up.

http://www.bbc.com/news/av/world-us-canada-40904076/car-plunges-seven-storeys-off-us-parking-garage

Sick of guages not working and no rev counter (because we upgraded to MSD) so fitted whole new dash. Lot more work than planned but finally all done and working properly.

I knew a brickies labourer that had exactly the opposite problem. He had both collars and used the short collar where he needed the long one. To solve the problem he just made a longer rod for the slave cylinder. Only problem was the clutch fork hit the housing before the clutch was completly disengaged. You could only push the clucth pedal 3/4"down. After a test run grinding gears, he had to pull it back out. Talk about bad luck, but he wasnt all that bright...