don't waste you money on engine mods yet. get suspenion mods first then get the basic I/H/E bolt ons. a set of springs/shocks, or coilovers with a strut tower bar, and a rear sway bar will make the most noticable difference. combine that with a set of some grippy tires, and some slightly bigger rims to prevent the tires from flexing and you'll have a very fun ride in the twisties. after you get the suspension and rims/tires, then add the engine bolt ons. that's what I'd do if I had to do it again.