| You shouldn't need injectors unless you go really wild with power. I don't know of many with different injectors. ON the wheels, you should find one that has a high weight rating per wheel. Also if your doing a fifth wheel trailer, E rated tires would prolly be best and you may want to look at add a leaf springs or an air bag system on the rear of the truck. I pu on 17's with 285's on an D rating and they sponge pretty good even at 50 psi. I've been thinking about some airbags. I had to crank my t-bars and that makes it seem like my truck sags easier in the back with a trailer with a lot of tongue weight. ON exhaust, there are several systems to go with. I like my silverline personally.
__________________ 2006 Crew Cab SB 4x4, Stock LBZ, Black with Gray leather, Factory Steps. Black H2's with 295/70/17 Nitto Terra Grapplers, Silverline 4" Turbo Back ss system w/Hushpower muffler. PPE Excelerator Hot + 2(set on 350), Bugshield, and grille insert. SCIV and 1058(Fleece Performance), HP 150 lift pump, Auto meter gauges and pod, EGR Blocker and FRPV shim kit,   | 
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