Ian, just make sure that car really has the 5.7 in it. A LOT of town vehicles only came with the L99 4.3L V8, and the two motors look the same. Look for VIN code P in the 8th position to make sure it's got the LT1. Also, it should have a 3.08 rear, and most likely a posi. Look for G80 code in the SPID label on the trunk (you'll also find LT1 or L99 there too).
Man, now I miss my '96 Impala SS.
