what boxes are best without chnaging gear sets or switching to a 6 speed.

and will the box also need matching diff

eg

v4 type r sti max power
v6 sti etc etc

thanks u

will be up over 350 soon and want box to last till i can afford gears

 

5 speed will be ok at 350, just. after that it's only a matter of time. better holding off on the power mods till you can afford a six speed