I posted this question not to long ago in another thread and was told that they were crap. Ive done some research on other sites since then and have found people that have run these pistons with no problems and not to mention one cat making around 300hp on them.What I would like to know is if anyone has had problems with them or knows someone that has. I think brian told me that they were to low of a compression. Is this fact or are they a good choice for my applacation ( 240-270 horses)? Any info is always appreciated. PS Im told they are also known as Vitara 8.5-1 pistons.