As of now I have a Ford 8.8 with 373 gears I also have Super Stock leaf springs and Monroe coil over back shocks. I have old school gorilla rims on my car, the tires I have now are 215/65/R15 I’m definitely going to need to go with a fatter tire with the new engine. With the current stock 383 I scratch the tires when I shift from 1st to 2nd to 3rd... that’s if I’m stomping on it. I have a Reverse valve body in my 727 transmission.. and it shifts hard.