This "to scale" drawing shows what happens when you stretch the front part of a model A frame, between the ''kink' as seen in top view and the front crossmember.---By making the frame 4" longer in this area, you can move the radiator, grillshell, and engine all 4" foreward in relationship to the firewall. This means that there is no longer a need to recess the firewall for engine clearance. Even when running a big old HEI distributor, you will clear it by 1/2" to 3/4". This is the only change required if you are running a fenderless highboy with no hood. If you plan on running fenders, hood, and running boards, then the hood, running boards, and running board splash aprons will all have to be lengthened by 4". The fenders themselves will not require any modifications.