So I'm new to this whole gtp scene, I originally bought my prix just for a daily driver but lately I've been looking at having some fun with it. My question is, what is the potential for these cars?

Given roughly 10-15k in mods what could you make a gtp capable of beating? A friend of mine has an sti and coworker just bought a zr1 and I'd really love to be able to beat down at least one of those if at all possible. I'm open to turbos w/e but it would have to be daily driveable and street legal. This is kind of just for fun at this point but I'd still be interested in the answers.