For sale, 489 (the good one)sure grip built by Randy's Ring & Pinion with Richmond ring gear & pinion 391 ratio. Unit was purchased and installed in my new duster in fall of 99. Previous owner only put 9,000 miles on this unit. I removed it last night and reinstalled the original 323 S/G which of coarse is more suited for the type of driving I will be doing. $600.00 Thanks! Dave
