build your own.100 bucks for a pair of stacks,50 bucks for a 6x6 square box tube,couple bucks for a foot of C channel and few bucks for a couple pieces of flat plate to weld onto the end of the tube.Just make 2 legs out of the C channel and weld them to the bottom of the square tube,Weld the plates to the end of the tube,cut 2 5" holes in the top and whatever size you want on the bottom a little off center to clear the drive shaft.weld on a pair of short 5" couplers for the stacks to mount to(and allow for replacement if something bad happens without the use of a torch!) and whatever size inlet pipe you want.There ya go.Supertrucker style stacks.Old school!
