Looking to Drop In 350 in My Sierra Classic

[silveradotime]

Hi all, Great Site, I bought my 1980 Sierra Classic Early Last year, I was buying it to sell it but after playing around with it, I have become attached and am keeping it. It is a Short Bed with the YE9 Silverado package, It has a 305 in it that has a cracked flywheel, bad oil pan gasket, I also noticed a milky white substance on the dipstick, It doesnt overheat but I know the motor is on its last leg. I wish I could go the Crate 350 route from Scoggin Dicky but funds do not permit.
Derick