Dirtworks gave you 2 front end options. the standard option was using a 1 piece upper bolted to the stock tower in the stock location. Or you could order the car with the "corrected" frontend which used the swedge tube/heim style. I believe for the 2005 your LF should use a 6" & 7" swedge tube and the RF uses 5" & 6". Its been 4 years since I've worked on a dirtworks so my memory might be a little off, your best bet would be calling Gary Clark or Jerry Hoffman. Dirtworks did not weld a serial number to the frame, they used a plate riveted to the dash bar.