Quote:
Originally Posted by Jdata
I called MW about the upgrade for the Jag. He gave me the information and two paths to take; use existing spline count or increase to 30 and convert to CV. The latter sounded the way to go however, the price shot up to near $5k...I did ask What he thought the power level it could hold. He said he wouldn't guess since it's a Jag rear but perhaps 300-400.. I am assuming per axle. Who knows..
So...
Then I started thinking about the other IRS systems out there because if you really think about it, a balls out straight axle is near $10K. The other IRS systems typically just need the CV axle upgrades.
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I put took mine and put int a Torsen style differential, 3.70 gears, and 30 spline axles. The brakes were upgraded to 11.5" and the axles are now 2.5" diameter. I have about 600 hp with no problems. My only concern is the outside quarter shafts, so I am looking into those.
Depending on the width of your rearend, there may be a lot of options. If you really want something bulletproof, you can buy a 9" IRS center section and build from there.