recently in rod and custom, there was a wild custom built merc,,,with a motor city flat head, that is a guy casting completely new flat heads,,with aluminum heads and a blower with 2 stroms,,15 grand for the motor,, 250 HP,,,
so ide assume that engine in question is making less then 250 HP and it would be any ones guess as to how much its making with out knowing whats inside or putting it on a dyno,,,
H&H flat heads in calif has a grave yard of flat heads,and has taken care of the over heating problems that go along with the flat head,,he is super busy and sending flat heads all over the world,,the HOT ROD movement is HUGE right now,,, do a search and read on H&h OR SUBSCRIBE TO ROD AND CUSTOM,,, or read over on the H,A.M.B,,,,flat heads,,,hemis,,nail heads and 409s are whats happening in traditonal hot rodding right now,,finally they got tired of the same ole chevy,,,,
yes i have AMERICAN G memorized my self your not alone,,big topic over on the H.A.M.B that movie is what started the street rod movement,,