Munkalido,The difference between the B300 and the M300, M400, and M500 is pretty simple, the B300 is a van frame, class C type. The M300,400,& 500 are class A frames, I am not sure what the MB300 is. As far as headers and free flowing exhaust on t...
I just purchased a "new" one in August to replace my "old" one. I currently have a '77 Pace Arrow on the Dodge M400 frame with a 440 engine. In my opinion, it's the best MH i've ever been in. My old one was a Sportsman on the B300 frame with the 31...
