Amt put out a '25 Roadster (1/25th scale) that has a pickup truck bed as a option. If you want a TT (thats the big commercial truck) you have to make a longer frame and scratch build the cab. It's just a box like affair anyway. And lengthen the driveshaft torque tube... In 1/32 scale there was a pyro delivery cab. You'll have to look on ebay for that oldie. Also, Hubley/Gabriel did a 1912 Mother's Pie wagon in metal in 1/20 or 1/22 scale. Another ebay find. Entex in the 1970 put out a large stake bed truck in about 1/16th. They're not easy to find. On another note, Monogram is making a Mack truck tanker now, which is not a model T but it is 1926 and from the side looks kinda like the type of thing you might be seeking... Maybe convert it (kitbash) to a Ford???