Now you can buy the pieces to convert your AMC spring perches to roller spring perches. This kit includes two 4140 chromoly shafts, two 3.25" long bearing journals, four high quality bearings, new spring perch hardware, and four centering washers to drill out the perch body. The method for building the AMC perches is the same as for the Ford perches. This kit is for the qualified fabricator who has done this type of work before. Please allow 2-3 weeks for delivery. International Shipping is available. Please Contact Us for more information. AMC DIY Roller Spring Perch kit Price: $125/pair