Optimal Race Trasmission Setup

The A999 is a truck and van transmission. I am "assuming" he is refering to using the 999 in a A body as this is an A body forum. Pull the 2.74:1 low gear and the 1.54:1 second from the 999 and put in a 904, do the other basic hot rodding things to the trans (shift kit, performance rebuild, maybe swap in a 5.0-ratio second gear lever to really make it hit ya in the arse, find a 5 clutch high gear drum out of a newer lock-up style 904) whala race tranny suited for an A body.