Marble
Member
Pinion angle isn't going to change your ability to hook, it just prevents driveline vibration.
Your problems are no prep, manual trans, radial tires, your springs, and your dampers. You're going to have a hard time launching a stick car with no prep (especially on the street, which is what I assume we're talking about here). There is just too much debris and oil on the street to get a tire to hook well, the stiff sidewall is also hurting you. There is not as much sidewall flex to absorb the initial hit and leads to traction issues. Stock dampers and those Eibach springs are also not your friends. You need to be able to slow that hit down with the shocks, control body movement coming back up, and get a spring that isn't so stiff that it won't allow weight transfer.
Ideally you would want to do all of that, but if you're trying to keep the budget small, focus on driver mod and ask your tuner to soften the tune up for the hit. If you have some money to play around with, shocks are probably going to be the most critical component to making the car work better.
This guy speakith the truth. I'll be seeing his input over the next year as I get my suspension where I want it.