Wiseco Pistons

Im in the process of a rebuild so the machine shop said i need some 40 over pistons so i searched and found some Forged Pistons from Wiseco here is the link

http://www.nolimitmotorsport.com/wiseco/apps-Nissan.html

I was wondering since i have to go with forged should i go with Wiseco? And on the link the specs for the Over sizes shows .02 and .04 what measurement is that 20 over and 40 over? And is the bore 90mm?

Thanks

It would read twenty thousandths over and forty thousandths over. Its called out 20 over and 40 over.

on the fj 40over is plenty.. wiesco does make good pistons i have used them in quite a few turbo engine builds and have never had probs with them