That's my question as well. The xtra-12 uses different motor straps and is a pain to get pipes to fit. If their different, use the storm straps and drill new holes in the bulkhead. It should bolt in after that. Pipes are the next pain. My xlt with ultra big bore.Originally posted by madcow
[br]the biggest thing is to make sure the xlt mounts are in the same spot as the storm mounts. after that it is a bolt in and go.
If your motor is hopped up, then custom fit pipes are the best choice. Center distance? Never been an issue so never checked.Originally posted by Memphis
[br]Yeah I think it will be ok, it not stock either , port head doesn't run well on pump gas.
Ultra 680 and suggestiong on what I should start with for pipes? Are the center distances the same for the 680 to the 800 do you know?