He had several '55 four-door sedans in his inventory back then, so he sliced off what he needed (not much of a market for tri-five Chevy four-door sedans), and welded the new cowl on. He added the '57 dash, cowl, front floor, and lower a-pillars piece off the '57, to his parts inventory.
The restored '57 was Desert Turquoise, but the new car was painted black with red/yellow flames. He replaced the spinner wheelcovers and stock rims with 15 x 7 Chevy rally wheels, which were painted to match the flames.
Couldn't find a picture...