Whos running over 700whp on an 8.75?

Certainly not a bad plan. And it should hold up well. I just think you’re beyond that at this point. On our race truck we run a full fab 9” housing with 4” tubes with a strange 9+ center section with a spool and 40 spline axles. We are at 650hp and 5300lbs on a 37” tire. We replace gears after every race. We broke a lot of rear ends to get the point of only doing gear changes and would have saved a lot of money had we started with big boy ****.

Yeah that is quite a bit more weight and WAY bigger tire putting quite a bit more stress on all of the drivetrain. Again this is a street car 90% of time with a couple trips a year to the strip. So thats a totally different kind of abuse. I think the 60 should hold. Hopefully haha