340 Piston to valve clearance w/RHS heads

We are just trying to help.

If the piston rocks when cold its more likely not to seal as well, the rings rock with the pistons and wear out quicker.

Putting just 1,000 miles a year on the engine is nothing, any pistons will last. I'm more worry about high fuel prices than those hyper pistons breaking. $20 in gas was going too fast last year.