There are no "dealer" crate engines for Pontiacs. The demise of the Pontiac motor was in 1981 - way before the idea of crate motors. And now Pontiac is dead.
The closest you can come to a "dealer" crate motor would be a package from one of the better known Pontiac high performance engine builders such as Butler Performance.
Most advertise in the Pontiac related magazines such as High Performance Pontiac. Which you will probably have a hard time finding at your typical food store
Absolutely, positively DO NOT have anything to do with a Bruce Fulper out of Southern California at a sham place called "Rock and Roll Engineering" or www.PontiacEngines.com. He has a long history of taking people to the cleaners in the Pontiac world.
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI