[chrispy]

Excaliber,

Thanks for the insight, very helpful. You did bring it to my attention that we are not launching a 2 ton car, something that I was not considering. I guess we can say that the light weight and the subsequent loss of traction, saves the rear-end.

I am assuming that the Jag IRS has the 8.5" ring gear in the Dana pumpkin. Comparing that to the 8.8" ford I guess they should be the same. Your mention of the heat treating of the gears, makes me think that this is the weak-point. Not too bad.

Like you mentioned "quality". I wonder how strong/quality the Everett Morrison IRS is compared to the JAG IRS setup from ERA?????

Than again as I read through, and do my research, I do not see many people having rear-end problems. Including some of the larger HP Cobras out there. So is it safe to assume that running say 800hp to a IRS (either the 8" or JAG) should not be a problem???

Thanks again,
Chris