pros and cons to both i guess,the GT will probably be that bit stronger,atleast in the transmission so you may have a little less maintenance whereas the electric will have the better weight distribution with the rear motor layout,and you won't have the job of converting it.with the GT you have the motor in front of the tranny so you probably won't get the pack in length ways to get the weight down the centre line and i'd run a reciever pack behind the transmission for the extra traction.either is a fine idea though.
Thanks for the reply Gustav I appreciate your input. I'm still undecided on what to do, I took a pic of the truck all together stock and then I took another pic of it all stripped down.
Heres the pics, let me know what you all think of the room that I have available.