sharam, thanks for the reply, used heli ms60 i got it looks like the previous dropped the engine and crack the mounting housing for the air chamber, what it did was got a piece of aluminum and jb weld it on it looks cleanly done with no mounting holes, so obviously i have to modify to fit the air chamber, hate to buy another one or use a 61, but since being inside of the air chamber, wondering if the jb weld would desintegrad/melt in the throttle.