The Mark Williams 9" alignment bar is manufactured from 2-1/2" diameter heavy wall D.O.M. tubing with a C.N.C. machined aluminum flange attached to one end. This aluminum flange bolts directly to the front of a 9" Ford thirdmember case in place of the pinion support and allows for perfect alignment between rear end and engine. With an overall length of 80" this bar can be used for dragster as well as funny car construction. **Please note that due to the length of the box this piece is shipped in, this tool cannot be shipped via USPS **