I am looking at Daves 69 photo's and the pipes are next to the drive shaft and a X would fit as well as any other X would with or without the fenderwell's. looks to me about a foot long will make it work.
Yes, but he plumbed the pipes back under the center of the car. Mine are still out at the rocker panels, and there isnt ground clearance or room for me to put them inside the frame rails.