I was looking for a pair of SS Springs on Mancini Racing's site...There's a bunch of different ones with different weights... shruggy
I weighed the 69 Dart and it was at 3240 so thinking the Duster may be a little heavier at 3300 or so.
The springs are for a 72 Duster with a 416 and a 727. 8 3/4 rear and 4.56 gears.
Which one would be the best to use? 3300 lb springs #MOP 865-866 or something different??? shruggy bow

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...FAFO...