I bought a 8.8 rear axle thinking that it would beef up my rear end a little more..well come to the fact..the 2003's 8.8 are the exact same(pretty much) as the 7.5. There is no difference in the "beefiness" or whatever??? I'm thinking about upgrading to 31 spline to make sure nothing will happen. In the future i plan on putting a 4.2 twin turbo in though. I'm wondering if it is worth it. I can get the axle shafts for 267 and get the 31 spline T lok on ebay for 150...
Axle shafts- http://www.americanmuscle.com/moser-31spline-88-axle-9904.html
31 Spline Tlok-http://cgi.ebay.com/ebaymotors/New-Ford-8-8-Rear-Axle-31-Spline-Traction-Lock-Unit_W0QQcmdZViewItemQQcategoryZ33731QQihZ004QQitemZ140135812711QQrdZ1QQsspagenameZWDVW
Not to mention that one of my axle shafts in the 8.8 is broke, but they said one from my 7.5 will fit....i'm just wondering if it would be worth it or a waste of 400 dollars?
Axle shafts- http://www.americanmuscle.com/moser-31spline-88-axle-9904.html
31 Spline Tlok-http://cgi.ebay.com/ebaymotors/New-Ford-8-8-Rear-Axle-31-Spline-Traction-Lock-Unit_W0QQcmdZViewItemQQcategoryZ33731QQihZ004QQitemZ140135812711QQrdZ1QQsspagenameZWDVW
Not to mention that one of my axle shafts in the 8.8 is broke, but they said one from my 7.5 will fit....i'm just wondering if it would be worth it or a waste of 400 dollars?