Those tall decks are low rpm engines. They use a heavy four ring piston and ussally a govener. Best thing you could do with one is use it for an ashtray. The deck being about 1/4 taller than the standard engine makes all the parts not fit anything else well. We used to take the blocks of the 427 models in and mill them off so we could put them in stock cars. Ended up it was cheaper to use a 454 block with the 427's guts in it.
