Since we are not talking about pulling boat trailers etc...look at the touring motorcycle (Goldwing, Harley and BMW) market for hitch ideas...most all of them use the 1-1/4" ball mounts and either 1 7/8" ***** or heim joint style pin couplers...the smaller ball mounts ease the fabrication challenge a bit...some of the simpler bolt on variety might be adapted to a Crossfire...just my 2 cents