I was thinking 1991 C1500 454SS TBI pump, but as it turns out, Rock Auto lists it as the same part as for the '82 Vette. AC Delco EP386 is the number. $40. I've had my Carter electric 72gph on the car since '96, still going. The instant start after prime is nice (I have a push button, since I wired my FP relay to the oil pressure switch). It's always been noisy though. You can't hear it like some of the race pumps, but the fact that I can hear it at all has always bugged me.