Ron,
The 68' Road Runner came stock with Heavy-Duty Drum Brakes.
11" x 3" (Front)
11" x 2.5" (Rear)
The standard B-Body cars had;
10" x 2.5" (Front)
10" x 1.75" (Rear)
Other Options:
Front Disc-brakes: ($73)
Power Brakes: ($42)
Power Steering: ($94)
Tinted Glass: ($42)
Seat Head Restraints: ($44)
Lower Rocker Sill Molding: ($21)
Black Matte Hood: ($18)
AM Radio: ($60)
Tachometer: ($51)
Arm Rest w/Ash Tray ($8)
Vinyl Roof: ($79)
Vinyl Trim Interior: ($26)
Remote Control Driver Side Mirror: ($9)
Deluxe Wheel Covers: ($21)
Automatic Transmission: ($39)
Sure-Grip Posi: ($45)
Lower Body Accent Paint ($17)
Air Induction Package ($55),,,,Mid-year option only.
Special Options:
Performance Axle 3.55 gears w/Sure-Grip Posi: ($88)
Special Order Axle 3.91 gears w/Sure-Grip Posi: ($144)
Magnum 500 Wheels {14" x 5.5"}: ($102)
Decor Group ($79)
Decor Group included:
Carpeting
Pillar molding (Coupe cars)
Additional Interior colors (Blue, Parchment, Black or Silver)
Trunk Deck-lid rear molding (aluminum panel w/red painted top and bottom sections,
and Road Runner in speed with a cloud of dust)
Engine color: Turquiose
Valve covers: Turquiose
Oil Breather-Cap: Chrome
Air Cleaner: 'Unsilenced' (black krinkle finish)
Air Cleaner Top Insert: Orange, with '383 Road Runner Engine' lettering
