Drive shaft length problem

[dart gt]

Can anybody tell me the length of drive shaft i need for a 74 Duster with a 489 83/4 rear end and a 4 speed A 833 from center to center.Thanks David

 

[dustya_383]

im looking for the same exact measurement. ive heard a few different answers like 48.99 inches u joint to u joint or 49 inches , heard different numbers some im also stuck but im going to take my chances on 48.99 inches see how it goes good luck