low band apply

The 518 and 727 use the same front drum, The problem is when the sprag at the rear of the case fails ,The later 518's had a better design because the sprags bolt in stock versus the press in style of the 727s. Also some of the early case 518's have a similiar press in style rear sprag as the 727's with no option of a bolt in sprag upgrade, I talked to Rick at A-A transmission he is working on one ,but nobody has one available yet as far as I know, So it depends on what year case you have for the option of a race style sprag .A upgrade to the front drum is still a great idea for safety sakes.