A stock block with a girdle wouldn't worry me at all at 400hp. There's always the freaks that'll hold forever at 600hp...but I think even 500hp would be barely within reason. Dart blocks look bulletproof but they cost some serious coin. Plus with only 8#s of boost you're running it pretty safe. A Dart setup would be great if you cranked the boost way up, but for that money I say if it ain't broke don't fix it. I'd have stuck with your current combo, too.
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1984 1/2 GT350 (#842 Hatchback w/ T-tops)
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