Hello, i am new to forums, i have a 1977 glastron ssv-189 with a mercruiser 165 that is cracked in the block just below the heads under the manifold. i have found a chevy in line 6 250 that has good compression and was running when pulled from a c10 van. i am looking for input on what and how i need to go about putting the running engine in the boat, what i need to change and what i do not need to change. any help is greatly appreciated.