New life for an old 340 (stock stroke)

MOPAROFFICIAL said
Nice job, Different animal.
What did the heads do?

Pump gas 383 with ported 346 heads(275-280-ish), 750 carb, 1-7/8” headers.

Nice numbers out of Ramm’s 340 though.

My old 340, which was a pretty similar build made 412tq/478hp, but had a bigger cam in it.