EDIT: I just found this forum by a Google search. I'm not a car mod wiz and I don't really know anything about this website. So if I'm out of place or am offending anyone, forgive me and take it easy on me. Thanks. Anyway..
I like my car (R33 Skyline GTS) a lot, but it's totally weaksauce on the road (130hp :| ). How can I add muscle to my car? I want to increase my car's max horsepower (to GTS25 levels, ie. 190hp or therebouts), but nothing overboard like something out of Fast and the Furious (or anything unnecessarily expensive).
Now, I could just sell the car to a friend and buy a GTS25, but like I said I like the car, and I already modded the audio and added rims, so I don't want to buy another car and go back to square one, remodding everything. What are my options?