Opinions please

Thanks yall......but here's the skinny on WHAT the engine actually is. It's a 1968 truck 396. 2 bolt block, CAST crank, horrible HUGE open chamber heads, so it's worth about as low as a big block Chevy can go. Now that doesn't mean it's totally worthless, but certainly WAY down on the totem pole of Chevy specialness. PLUS, I have YET to determine WHERE the coolant was getting into the oil pan. It may well have a cracked block, in which case that leaves me SOL.