Welcome Tyson to the best site around. If you could meet up with a T owner locally to try out the sitting etc. that would be a tremendous help. I would still suggest that you purchase what body you are going to use first before planning out the frame as then you can set up the body with a seat to your liking and work the dimensions for the frame from there.I also like the idea of a longer pickup bed as storage space is non existence in the normal T Bucket.