Since we are putting a 700R4 in my wife's car we need a shorter drive shaft. I used the original on another project because I thought I had another driveshaft to shorten. When I dug it out I realized the driveshaft is 2 1/2 inches while the original one was 3 inches. This one was in a 70 Nova. Does that make a difference in strength? We are not going to be drag racing but we are running over 350 HP. Or do I need to find another one?