Ya sorry MA Merchant Auto.MA as in Merchant Auto? i havent but i dont see why they wouldnt be good injectors. they have been building big power dmaxs for some time so im sure they know what they are doing.
i think Tom (thebac) has them in his truck but i could be wrong.
I do not run MA injectors. Last I knew they are redone by Exergy.
Mine were redone by a company local to me.