Has anyone tried the MFR Mahle pistons that is suppose to drop in without sleeving the block? Is there any reviews on this product? Has it been tested?

Has anyone tried the MFR Mahle pistons that is suppose to drop in without sleeving the block? Is there any reviews on this product? Has it been tested?
dude i been asking the same question arround i dont reallt know if works but the guy that works at importperformanceparts.net he told me that with this pistons stock bore and good set of rods. u h22 should be able to hold 25pis without sleeving u block. but see im not really sure i been asking people and they still think the block need to be sleeve