413 marine industrial (E) engine, to, not so industrail......

Alright, so, it's RB time. My 30' long boat is tired of having a single 318 in it, and so am I. (SLOW) I just picked up na industrial, with the big heads, diagonal exhaust bolts, etc. BEcause I have been driving my *** off and not thinking about MOPARS in so long, I need you guys to double check me here.

The 413 marine/industrial block is the same. This ones internal balance-steel crank I'd imagine, no weight on balancer. stock 440 heads will bolt up? This thing came off a dry stack keel cooled boat, so it doesn't even have a water pump on the timing cover. An auto/M440 timing cover will bolt up to the front? (water pump was external belt drive)

Aluminum heads..... I'd LIKE to save weight, considering I am going from LA to RB, and 110 gal fuel capacity, to about 290gal. Will or do they have/make aluminum heads, that will work good (efficient) low rpm? (hull speed cruise@1500rpm, planing cruise@2800-3200rpm, max RPM 4000)

it gets even trickier, because it's a reverse rotation, however, I playing with the idea of going LH rotation, because of parts availability, and just getting used to backing up to the startboard side.

Remember, 300HP is plenty. do they have a stock(ish) flow aluminum head? I don't want to overport it.