i have a 95 cavalier z24 5spd, i am swapping in a 2.4 from a 96-98 and a getrag trans from 2000+ and possibly going to get either the gm supercharger or a turbo kit. what would be the best tuning software to use for tuning the fuel/spark timing, is there some kind of piggyback system or a standalone management system ? what would you guys recommend? and what are some performance mods that would be recommended for the 2.4? what are the best quad 4 parts to put together? I have read the hotrod mag article stating that a 2.4 block with the 2.3 ho head and cams is the best setup to run?

There are quite a few options out there, it just depends on your goals. Search the forum and you will find a lot of stuff. HPTUNERS is the easiest to tune with, without going standalone.