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?

I've had a 7290 yoke in my 68 B that weighs 3880 with me in it for 25 years. Plenty of mid 12 runs at 114 mph. No problem. My 1 aluminum shaft made it through the burn out and then grenaded at launch and ya it was a conversion joint. No 7290 yokes said the builder.