engine #C542-8-23046 it is a Chrysler Fire Power generation 1 it has a cast oron 4bbl intake on it i am debating on stuffing it into my `65DartGT but i need to know what im dealing with so i can research parts

 

Your engine's a Chrysler 354, I believe in a marine engine it was M48. Intake should be arranged to accept a small carter 4 barrel carb, a WCFB.
There's a lot of stuff available from the past to hop up these engines. Should have a dual point distributor in the back of the engine.

 

I did some research awhile back on a 354 Hemi and kept this site for reference. This site is very useful.
Your engine numbers come up as a 331 Hemi

http://classichemi.com/index1.shtml