Too much torque

I would say you had a wore out 7260 set up, small joint.
A 7290 is a step up, you will need new trans yoke, driveshaft, and rear end yoke.
1350 is bigger yet aftermarket.

You can run offset sizes on the yokes and driveshafts but I do not recommend it.

If your driveshaft and yoke is in good shape buy a quality u-joints and put it back together, no autozone or chain store stuff, look for spicer u-joints.

Here is a link to find out what you have in it now.

http://www.brewersperformance.com/products.asp?cat=121