30 over 340 trw piston

I am not sure what you are looking for "A piston or a set of eight" ?

I needed one of these pistons when rebuilding my 340 engine a few years ago. Everyone wanted to sell me a set of eight, but Summit sold me one piston for like $45-50 . It looked different than the same number piston from the mid 1980's, when I weighed them they weighed exactly the same and all of the dimensions were identical. I used the new replcement piston in my engine and everything has worked out fine.

Bob