Cap OD for a 7290 Yoke is 1 1/8 inches, for the 1350 is 1 3/16 inches. on a 12.5 sec 3600 lbs car is the step up worth it?

Thinking about having a new light weight drive shaft made. Looks like not all companies make drive shaft yoke to fit the 7290. But it looks like the 1350 is everywhere. I beat the crap out of this car on the street and at the track. I have a Gear Vendors unit on the trans. It's output shaft has the 1350 on it. I am looking for stronger and lighter. With a drive shaft that is just 34.5 inches long don't know what I would gain. Looking for better 60 foot number.
Aso thinking about next size smaller tire. 275 X 60 - 15, 28.19 diameter to 275 X 50 - 15, 26.42 diameter. Might be the better move.