8.75 R&R (Randy's) vs Rebuild (Dr. Diff or ?)
By LSS&B
Considering options for replacing my 741 open rear, 66 Coronet Randy's Ring & Pinion Fully rebuilt rear with Yukon housing and Sure Grip diff is 3.73 & 3.90 gear $1,747.89, 3.55 gear $1,864.89 Rather than buy an HD 742 or 489 case then buy rebuild kit, ring & pinion, and differential from Randy's and then pay for rebuild or buy $300 in tools, it's cheaper to buy a fully built Yukon unit. https://www.randysworldwide.com/products/ydac889-390pl However, Doctor Diff parts are considerably... Read more



