1973 Formula SD-455
The Rear-Spoiler was an option..... Code #D80
Standard Rally II Wheels.................14" x 7" with F70 x 14" R-W-L {Firestone Wide-Oval}
Optional Honeycomb Wheels........15" x 7" with F60 x 15" R-W-L {Firestone Wide Oval}
'RTS" Radial Tuned Suspension....GR70 x 15" - Radials 'Thin Stripe White-Wall'
SD-455 lettering on Scoop, which had the vent-plate riveted closed.