I have. MMR 4.75 that's getting ready to go in my car. MMR did not assemble the engine. I was also Leary of the 4.75. I talked to several people who are actually running them without issue. It seems the big problem is that a lot of people install the thrust bearing wrong.
TFS Track Heat intake,Dragon 75mm tb,Vortech V2 S-Trim 3.33 pulley,Paxton fmic,Anderson power pipe,CPR fuel rails, Lethal Performance upgraded fuel lines,Deatschwerks DW300 fuel pump,60# injectors,UPR O/R xpipe, Borla Stinger catback