Hi, I'm new to the board, and i'm working on a GT40 replica based on the T3 design of Randy Treadwell from Colorado. Melson motorsports took over the jigs and body molds and is producing this replica now. My question is, I have 18 inches of width, and 35 inches of height in which to locate a competition drivers seat. So far, all the Sparco and Momo and OMP seats i've looked at won't fit. Any suggestions? many thanks in advance.