HI,I got an S4 1987 rx7 and I am bout to rebuild the engine.I bought the car not running on the purpose of rebuilding/learning about the engine.I already bought the Turrentine rebuild video and there was a section called "Killer Parts Combo" or something like that.I was wondering what would be the best way to get as much HP out of the engine mixing parts.If you have any usefull information about mixing parts from different years,please share!From the video,here is the parts list I got:

89-92 Rotors=Higher Compression+Lighter
89-92 Front Counter Balance
86-92 Inter. Housing
87-91 TII Rotor Housings

Thanks in advance!