Jeep high back buckets or A100 van seats?

OK, for the sake of argument and science, I performed a digital bathroom scale comparison of the seats.

Jeep - 19.8 lbs.

A100 -21.8lbs.

So that is approximately 40lbs total for seats not including mounting parts. What the would seat tracks weigh, let's say 15lbs total if I use steel for brackets and drill them with 'speed holes'. That's a little over 1/2 of what the bench seat weighs.