'71 Pontiac GTO 400 in '68 GMC? or should I go SBC?

[68_GMC_910]

heh... well, that is the question that's driving me a little mental... My friend is selling the 400 out of his GTO and he gave me first dibs! it's got a 4 speed which I'm guessing is a Saginaw...

A little info if you're not familiar with the 400 Poncho:

Once upon a time.......Chevy was different from Buick/Olds/Pontiac

Back then Pontiac made their own 400. Visually, it looked the same as a Pontiac 350 or 455. It was essentially the same block with different bore and stroke.

well, I know that the SBC is the way to go for making big power for cheap, but what about the Pontiac mill?

Well, he'll give me the motor and tranny for 400 bucks... If were a chevy motor then I'd buy it for sure... lol, but it's not and I'm wondering what the benefits of the Pontiac would be over the 350...

besides, GMC is sister companies with Pontiac... it's sorta the truck division while Pontiac is the car division of GMC... so that's sorta cool seeing how the truck would have been made the same time as the car...

I know I'll have to make mounts but that doesn't scare me... I look forward to that...