Im looking at buying an 84 celica with the 22re engine.

Im currious as to what aftermarket support is there ?

What is out there for Tuning ?

And it needs a clutch would just a stock replacment be enough for a few little mods or should i spend the extra for an aftermarket ?

Oh and any links to general info, Mods, parts, Swaps stuff like that are a big help since this would be my first toyota.