It might only be 1100. Conflicting info. One says 1100 while another says 1500. I believe they allow 400# for passengers so 1100# in bed. I am sure it would hold more. They have aftermarket air shocks for them.
The amount of aftermarket accessories is quite impressive. The thing has hydraulic remotes on it so attachments available could be run. Other options from aftermarket included racks, tool boxes, mirrors, cup holders, hitches, dump bed side boards to increase cubic feet of cargo. . . Lights, A/C, heated seats. . . I couldn't believe how much there is out there. Outside of a windshield and roof I'm not sure what I'll add but the fold up storage rack/basket on the front would be handy for chainsaws and such.