340 Piston to valve clearance w/RHS heads
Some of those higher compression engines got beat up in the late 70's early 80's by the cheap gas and us high school kids driving the cars cause they were so cheap back then.
So a piston might have crack due to the bad gasoline and the rods were reused Then many years later another owner throws a rod out and says its old factory stuff and the cheap China stuff is better.
Yeah get a price and let us know, I'm guessing its $800 plus, too much for me, I need gas money cause I'm drive my car alot, life is short you will see.