Im thinking 830, I hope it makes more but the 1 5/8 headers might cost it some power. I also think the boost psi # might be higher than expected with the reversion.
I say this because I had a vortech t-trim on a 351w and I went from 1 5/8 shorties to 1 3/4 longtubes and the boost dropped a few psi and I had to re-tune the carb.
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