Might be the Boss 429 that I'm thinking of that required the shock tower work. Those semi-hemi heads are probably wider by alot than the regular 429-460 heads. I still bet it will be a lot of work. Sorry for any mis-info.
Rev
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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.
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