Page 2 of THREE of Which "T" do "U" have?? 1923-1925 Open cars

[1923-1925] The Roadster has a wooden end sill. The Touring has a metal end sill and metal  stiffeners in the seam between the back panel and the quarter panels. The ribs that the rear doors hang onto are metal and screw down on top of the sills.  The 1923-1925 cars have two different cowl rails and #1 pillars to choose between. One measures 1-3/4 inches wide. The other one measures 3-1/4 inches wide.

Drawing#1 shows the two front Body to Frame Brackets are extended to reach the front pillar. Drawing#2 are tri-angular and are like the brackets that are used in pre-1923 cars and these are used in the rear on the Roadster. Drawing#3 show brackets on the Touring are riveted to the endsill & bolted to the side sills. 

Some cars use a bent TACKSTRIP that measures 3/4" x 3/4", and wraps around the seat back. If the sheet metal on your car has a lip, the tack strip sits on it.

Some cars use a BELT RAIL, it is several pieces of wood that measures 3/4" x 2", It is cut to fit & bolted to the inside of the seat back, protruding above the top of the seat back. Belt rail sheet metal doesn't have a lip.