462cid, back slowly away from the Buick and breath in deep.
Okay, The guy that said to use the SB Ford lifter has never lied to you before and you trust him, right. Go out to the parts store and buy a Ford lifter, take it to the machinist and have it turned. Put the car to gether and your set for the winter.

Yeah I know that is not a hipo lifter, and you will have to do it again come spring, but at least it's running and solves that problem. Now you have all winter to research the lifter problem and find a resolution.

That's the easiest answer I can give you. Don't worry about breaking a new lifter later. Just lube it with break in lube and follow normal break in procedures. Just a voice of old age speaking.