Based On The Overall Experience...
I bought an LS-3 crate engine from GMPerformanceMotor.com, a.k.a. Gandrud Chevrolet. Total price including shipping was the best in the nation. However: * The ship date slipped quite a bit; Gandrud never gave me any updates on what was going on. * A buying incentive I thought would be automatic (a free 6-pack of synthetic oil) was instead "By request only." * A meaningful rebate also turned into a problem because Gandrud didn't send me an invoice until the engine shipped - after the rebate expired! * The instructions with the crate engine leave A LOT to be desired. Chevrolet seems to depend on their dealers to fill in the information gaps. I've asked maybe a dozen questions, and gotten useable answers to about half. Recently, I asked a question three times, and only got questions back. Image if you asked the size of a trailer hitch, and instead of "2 inches" the answer was "what type of trailer are you using?" - repeatedly! I will much more heavily weigh the quality of available support before selecting the source of my next GM crate engine.
By Ken S.