Originally Posted by WriterDennis
Most likely, you will not have an adequate brace under the dash unless you install one. I believe you could build one easily enough by bending some tubing (one to two inch diameter) to closely match the shape of the inside of the cowl. Weld a flange on each end so that it can be bolted to the floor/frame rails. You can then mount your pedals and have something substantial to mount your steering column to as well.
Dennis W. Parks
Author of automotive how-to books
On my T, I used a brace made of 1 1/2" x 0.120" wall square tubing, like an upside-down "U" and welded it to the frame. Stiff as a minister's dick and worked well.