Hello I have a 98.5 dode cummings turbo diesel and I am having trouble finding the max towing capacity for it. I am in the market for a fith wheel toy hauler because of the desert I love it, being stationed in San diego is sweet, but I wnat to make sure that my truck can safely tow what I buy. My truck is 4x4 with 410 gears and dana 80 rear end also five speed manual tranny and a few mods, edge juice with attitude and a banks monster exhaust and cfm+ intake elbow I just want to make sure that what I buy can be safely towed by my truck any help would be greatly apperciated so thank you very much to anyone that replies.

Jeff