Depending on depth of pockets... Cobra is great but all aluminum.. = Expensive.
Kingsleycoach.com ..not cheap.. Showhauler might be able to help also if what you want fits in their floorplans..
good luck
John
never heard of "Racers Race Haulers" and did not get a hit on google... at least if is a dual tandem but that little M11 will be in a strain methinks if a fairly good load is put in the back...