2010 Prerunner Over Load/Load Leveling

I took delivery of a new Tacoma V6 Prerunner with Access Cab about a month ago. My work is using these as new service vehicles replacing our old E250s. Yeah, I know big difference, but they are insisting on a v6. It has been outfitted with a Jason Work-Force Premium Contractors Cap and a Bed-Slide. Very sharp looking rig, but I need the function as well.
I was carrying about 1000lbs in tools, parts, and manuals in the van, obviously this is not going to happen in my Tacoma. With the cap, bed slide, and myself I'm already carrying around 650lbs without any of the things I need to do my job. With the addition of the cap and slide my rear bumper has dropped about 7/8 of an inch, so I've been leery of carrying any more than I have to have for the known job of the day.
Can anyone make any recommendations on over load/load leveling bags, springs, or leafs to help with carrying the things I need to do my job without riding down the road with my rear dragging ground?

 

You can get the upgraded 4 leaf springs put on it, if you have the 3 leaf ones.Go to the dealer you purchased it and tell them your bottoming out.They have a Toyota Service Bulletin that changing them will let you tow or carry more weight.Just do a search on here for TSB and read up.Also from Indy. Mike

 

I called the Toyota dealer it was purchased from this morning. He said he would look into it and get back to me. I stopped by O'Brien Toyota and they acted like they didn't have a clue. i was able to find the TSB on here and printed it out. It looks as if it only applies to 08 and 09 4x4s now. Anyone know for sure? Mine is a 2010 4x2 and it definitely has the 3 leaf spring set up.

 

It applies to pre-runners and 4x4,I would take a copy of it and go to dealer where you purchased it.Explain the problem and if they dont want to do it ask for the 800 number and call them.Im sure once you ask for the number they wont hesitate.

 

The truck was bought as part of a corporate deal in Jasper IN. I did give that dealer a call yesterday morning, but they never called me back. I spoke with service at Beck Toyota late yesterday afternoon. They knew exactly what I was referring to and said that my situation was what the bulletin was written for and my truck was a prime candidate for the upgrade, but I would need to schedule a service appointment and drop it off to allow them to get a claim started. So, that's what I'll do and we'll see where it goes. Hopefully it's no big deal because I need to get something resolved pretty quick to be able to get back to carrying all the stuff I need.
Thanks for the replies.

 

Truck was upgraded yesterday. Over $2000 worth of shocks, springs, and install all compliments of Toyota. Can't beat that. Truck does ride better and seems to handle better, but still sags with the tools, parts and manuals I have to carry. Service manager at dealership still recommends air bags. He also told me he recommends tire balance and rotation with each and every oil change. He says with the weight, tires will still understandable wear prematurely, but b and r every time will help keep them from becoming choppy while wearing.
So, with all that said anyone have any recommendations or experience with baggin' their Gen2 Tacoma?