Dennis, I went with steel again. I talked to several people who race their cars and they used to run with aluminum, but they wore out too fast for them. I checked with Summit and Jegs for pricing and it really isn't a whole lot of difference to buy the aluminum.

My driveshaft was 2 3/4 in diameter and they recommended at Drivelines Northwest that I go with the 3" for my horsepower and drag racing plans.

The weight of the steel one I am getting will be 19 1/2 lbs. and the aluminum would be 13 lbs.

There are benefits to both. You can get aluminum driveshafts or even composite for drag racing, but not near the cost of the steel shaft.

Take a look at the different internet sites and see what you think. I value your input a bunch. Larry