So I was at this guys place making a deal on Buick parts and he showed me a set of NOS 65 Riv fenders his asking $1,200 for the pair and he showed me a 71-72’ 429 interceptor cobra jet motor, and he’s asking $2k for that so I told him I’d post it for him. He doesn’t have internet. I’ll be going back there next week so if anybody needs more info I can get pics and such for you.
Would need to know head casting numbers to determine what it is. Police interceptors will have head casting D0OE-R for '71 and D2OE-AB in '72. No Cobra Jet in '72, so if it is a '71 Cobra Jet, it will have head casting D0OE-R also. Block should be a D0VE-A or D1VE-AA for both, and without removing the pan there's really no way to tell if it's a 4 bolt main or 2 bolt, but even the 2 bolt factory blocks will hold up to 800+ hp naturally aspirated with no addition mods, some guys are at 1000 hp with them living reliably. If it is a 4 bolt block with D0OE-R heads, that's a great deal if it is in good shape.
