I am not familiar with lock-up or these types of trannys. These are for vans and trucks. I didn't know that 3.55's would have your rpms that high at 65. I was considering 3.91's or 4.10's for my Fury. For a Sat. night I would choose 4.30's or even 4.56's. The 4.56 ring and pinion is for 1/4...