When to Upgrade?

[BlackenedSVT]

See sig for my car. But anyway, this summer i am going to do a T45 swap and a PI headswap, along with headers and exhaust, and subframe connectors. I also will be getting Drag radials (G-force), and want to be going to the track a lot this summer. I plan on getting up around 300hp this summer, and more next summer (probably with NOS).

My question is, how much hosepower can my rear end take before i need to start upgrading stuff? I've heard of people with sticky tires and rear end gears (like me) breaking axels and rear ends at the tracks. Since my car is ALSO my daily driver, i can't afford for this to happen. But at the same time i'm broke, and don't want to replace things YET if i dont have to.

So when is a generally good idea to upgrade different axels or whatever...and what should i upgrade? Any ideas? Is there other things BESIDES the rear end that i should upgrade too? Thanks guys.

- Jay

 

[Dark Knight GT]

If you plan on just running on DR's and not full slicks, you can probably get by with the stock rear-end until you go boosted. Then, Ide consider upgrading to a 31 spline setup. To do this, you'll need 31 spline axles and a 31 spline rear differential.