im to worry of the weight of the 2x3 the 2x3 is for the rear frame rails and I was going to use 2x2 to connect front rails to the back rails.I was going to use 14 guage sheet goods for the floor and trunk. Bother n law work a metal fab shop and he can me 24ft 2x2, 24f 2x3 and 5x10 sheet of 14 guage for $250 bucks is this a good price