If I could make money just from the useless car knowledge that I have inside my head then I would be a millionaire!! Things like a GM F body fuel pump is a direct replacement for a 2nd gen J body. A common lack of compression in cylinder #3 on a Geo Metro is a burned exhaust valves caused by a clogged EGR passage. The crankshaft from a diesel Nissan/Datsun Maxima can be used in a 240/260/280 Z car as a stroker crank which is also good for 9,000 rpm. The Dodge SRT-4 (2003 to 2005 models) computers will pull ignition timing a LOT if it sees that an aftermarket wastegate actuator or boost controller is added. I could keep going but I'll stop now.
Get the point .... wow ... indeed ..... u have a photographic memory?