[MENTION=99429]WanderinWhitlows[/MENTION] / [MENTION=130953]Balakay[/MENTION],
It can be done but with the limited leather seats, you'll need to obtain the L & R electrical harnesses beneath the seats, the heating temperature dials (console), and the wiring sub-harnesses from the fuse box to the intermediate seat harnesses; seems like a extensive list of parts to purchase, especially when you're getting a new vehicle anyway!
Additionally, you'll forfeit your factory warranty; I lost my warranty when I simply added a pair of PIAA foglights to my bullbar... any issue that I had with my truck after that point, the dealer blamed the trouble on my aftermarket fogs. Something as simple as a squeak or rattle underneath the chassis was blamed on my A/M foglights!
Why not just order heated/cooled leather seats with the the new truck?