All 1994 to 1996 Impala SS cars, (WX3 trim LT1 engine) (watch out for misrepresented clones)
A lot of 1994 to 1996 Caprice cars came with the LT1 also.
A lot of 1994 to 1996 Caprice cop cars too.
Some Fleetwoods came with the LT1
Wagons did too.
Look for LT1 on the trunk lid lable, (SPID lable) and look for "P" in the VIN, example, 1G1BL52POSRxxxxx (the 8th digit would be P for the LT1 engine)