I am not aware of Wizzards experinces with a MII in his merc. I personally will not install a MII in a 49/51 merc any more even without bags as they are unable to handel well but the weigh is not a big issue. The issue with a MII is they have real basis static geometry combined with very short A-arms. The camaro, nova, volarie and jag all have advanced dynamic geometry. The camaro & nova have the longest A-arms and the 2nd gen's has a real advanced race proved dynamic geometry that just works. I know this is totally confusing if you donot under stand suspension geometry but when all the hype, smoke & mirrors are gone i think not to many would still install a MII under a 49/51 merc. You must of talked to Matt, he use to worked with me. One of my customers bought that stage 5 Fatman stub but decided to install a camaro clip in his merc after i showed him the differences. You are welcome to come by and take a look for yourself.