[wkooiman]

I had a 428 with a TKO-3550 and 3.50 locker in a 67 mustang about 15 years ago. It was a bit tight - hard to shift fast. 5th gear was a little too high.

My Cobra came with a top loader and 3.54 Jag rear end. The gear ratios were off. 1st gear wasn't low enough. 4th was too low. Probably has the 2.32 first. I never checked. Highway cruising was painful.

I switched to a TKO600RR. I was worried about the tightness from my earlier TKO, so I got the one modified by Brent Lykins. I am very impressed with how well this transmission shifts. I didn't think it could be smoother than a top loader/Hurst, but it is.

Gear ratios are a little low, but the fix it to go to a 3.31 rear-end. This is with a 428, soon to be a 482. Every change gets closer to nirvana.