That trailer should be no problem. The 4.10 gears should help even more.
- Check IC boots for leaks then clean and retighten. HINT - Spray the pipe with Aquanet before you put things back together.
- Check the up/down pipes for leaks.
- Fuel Filter
I always thought my truck will a little gutless when you would punch it while rolling. It would make a lot of noise then LAUNCH. Now that I have the exhaust it got rid of all of that. Ditch your muffler and you will see a lot more drivability.
Good luck and PM sent.