Match Race ~ 1970 'Duster 340' vs. 1969 Mustang 'Mach 1' 351W

'Heads Up in the Quarter-Mile'

*1970 'Duster 340', 4-Speed and 3.23 Gears w/'Sure-Grip'
vs.
* 1969 Mustang 'Mach 1' 351W, 4-Speed {Close-Ratio}, and 3.91 Gears w/'Traction-Lok'

I'd still take the 'Duster 340' everyday of the Week.

As spec'd above that would be a close race, but the Mustang's got the edge with the gears. Give the 340 car the same treatment in terms of rear axle - and it's a definate mopar win assuming equal drivers/traction/state of tune.