Found a long bed TC hauler.

Nice truck - I have the same year although a different brand. Look into the larger tow mirrors so you can see along side your TC. Once you have your TC loaded, you will be able to see what suspension upgrades will make it feel comfortable. Does it have helper springs or an anti-sway bar installed?

https://www.gmupfitter.com/files/media/photo/111/2005_LD_CKFullSizeTrucksPickups.pdf