Been on Vance & Hines site, am finally going to order my 2 into 1 system for my '06 Street Rod, but I noticed on the site they have only one part number which is #17535 for both Street/Night rod, but comparing pictures ~ the Street Rod seems to be 8"-10" shorter than the Night Rod. Anyone know if there's two part numbers?? And do you have the settings for the V&H Fuel Pak? V&H does not display this part number for the settings for this exhaust. I will be running High performance air filter and topless. Everything else is stock.... Any help would be greatly appreciated!:banghead: I have waited so long for them to actually release this system and all I have heard is two more weeks. Finally I can order them but not sure of part number!