I have a 91 Lx with all my mods listed in my profile, and I'm looking to add more. The air intake is a no-brainer, I have no idea why the previous owner didn't do that. I was thinking a 70mm throttle body, cobra intake, and a cam eventually. Anything else I can do for not so much money for a good benefit? I also need to replace my posi, is it possible to replace it without touching the ring and pinion?