I bought an '87. I've been upgrading steadily with all the bolt-ons including a (supposedly) 400 HP Poston supplied pump and then (finally) built the engine. Took it to Lebanon Raceway (NY) with Jack Cotton late last year and was getting no-where for the money invested (13.5); beat a couple of mustangs though. Anyway, I was looking through all the info everywhere like we all do and came across Red's info on his double pumper. His marketing info: "feeds 1,000 hp motors; all the pump you'll ever need!" This is the one item for any car I've ever owned that lives up to it's hype, and it comes with a new sending unit all for the price of a GM dealers sending unit alone. Which pump should you buy? Why guess at what you need or what you may need in the future. This is the one item in your GN that the money/cost factor should not even come into play.
My $0.02
Hi Red.