I'm trying to figure out the correct engine compartment clutch linkage return springs for 6S1757, late March 66 build date. When I bought the car in 1987 it had the original upper spring which connects to a hole in the upper HiPo Z-bar arm on one end and to a bracket in the firewall on the other. According to the Ford Master Parts Catalog (FMPC) this is part# C6ZZ-7523-C and correct after 2-14-66. So far so good but it also came with the long 14" lower spring which connects to the clutch fork on one end and a hole in the lower shock tower on another. According to the FMPC this spring is part# C5ZZ-7523-A and correct before 2-14-66. Again according to the FMPC, my car should have a lower spring with part# C6ZZ-7591-A which attaches to a hole in the lower HiPo Z-bar arm on one end and I assume (?) the clutch fork on the other end. The Z-bar and upper spring are confirmed original to the car but I don't know about the lower spring. The Z-bar does have a hole in the lower arm. Thanks, any help appreciated! Dave
