Dave,
Thank you very much for the picture. That is the first picture that I have found showing the MF round mufflers beside the tank.
I am surprised that you were able fit a 7x14 in there! Once I have my exhaust purchased and installed, I will cram the largest one in there because I am hoping to not have to use a resonator under the seat.

Do you have another angle of the 7x14 in there? How close is it to the bend on the over-axle pipe?
Have you tried your exhaust with only the round mufflers?
If not, is it loud now with the set of MF's on both sides?

Thanks allot!!