I'm getting a different engine built as we speak. Old engine was 615 big m steel 10.2 block, new one 632 brodix aluminum 10.2. Just setting here in lock down doing some thinking and was wondering if I should plan on a 4 link adjustment or try it as is. The weights were 1150lbs rear and 1320 front for a 53.5% 46.5% split. I'm guessing it will be roughly 51.5 48.5 with the removal of the block weight from the front. 4-link is set at 58" out and 7" up as of now. It would only pick the tires an inch or 2 and drop them with in a few feet before. Should lose roughly 110lbs and add roughly 50hp. 1.80 glide 4.56 rear gear 33x15x15 bias slicks.