check rules and regulations.
anything in red is new

Only the Porsches need to have a diffuser? How about the others? By the way, I have bought a Matra/BMW GTP, Ford Mustang Probe GTP and a Lancia LC2 (the wide Tamiya one). Can we put them on the homologation list? The bodies Ford and Lancia are used (painted and decals on) but without missing parts, still in the market for buying new ones as well.