Same old /6 to 318 swap questions

where is "Blackstock"? Interested in selling the (old) motor, trans, bellhousing?
how many miles on truck? Those slant 6s didn't "wear out" too quickly. Sure a good tuneup and valve adjustment, wouldn't get it back where it once was (or better) maybe a super 6 setup along the way?
I’m in South Carolina and the slant 6 block numbers are 4343? Which i believe is an industrial engine. Has the Holley 1920 1BBL which I think it’s an early 70s model. I’m not sure if I’m going to sell the engine or not.