Quote Originally Posted by Blitanicle99
Beat the **** out of your drive shaft tunnel because its gonna be alot bigger. How is your rear end? Why not throw an solid axle under there while your at it to make it wont blow?
You can get a cheap 10 Bolt chevy or ford 8.8 for nothing and it will hold the power you need it to.
I dont really see the little IRS diff holding up to 400 hp and off the line torque.

doesn't take that much hammer work.

and why throw a solid axle under a car with a perfectly good independent rear with nearly bulletproof rear end? the R200 diff is similarly beefy as a ford 9" internally. they've repeatedly held up well above 400ft-lbs of torque on sticky tires at dragstrips. at worst you'll break axle shafts for a u-joint, but a nice beefy set of aftermarket axles is much cheaper than retrofitting a solid axle into the car.