The weekend must be here. there is a kit of pucks to line everything up in line (I have it) & you need a 3/4" straight bar. A chop saw will work to shorten the tubes & a guy who has done this made mention that you need to clamp it all inward tightly (I gotta pick his brain some more). For you info I would go on youtube as there are some vids there on doing this. I think keeping everything inline/proper welding/perch angle correct are the critical areas. I ain't attempted it yet so this is all I can offer.