TTI system questions

I'm doing an x-pipe system right now which may be a little different, I'm running everything from the rear through the x assembly, then doing the downpipes from the front, it looks like I'll have to cut about 3 inches off of them (for the shorter wheelbase) and then I'll add the slip connectors for the x last. H pipe may not have those slip connectors though, they are width and length adjusting which is very nice.