Also with Wiseco pistons, they are forged and they have a tendency shrink after the first heat cycle almost .0015.
I tried them in my TZ 350`s for a while and the trick was to put them in the oven @ 400 degrees for 20 minutes before fitting them. You also have to give ample warmup time before you give em the berries as cold siezures are common with them.
They were also heavier than the stock pistons.

Not recommended!

Mike
_________________
Mike