I have a 1999 F-150 2wd with a fabtech 7.5" long travel lift with the dual shock engine cage. I need to replace my shocks and was going to buy Bilstein 5100. I called Fabtech and they gave me the shock lengths. Front: 22.82 extended and 13.92 collapsed(sp) Rear: 29.17 extended and 16.89 collapsed(sp)

What shock numbers do I need to get from Bilstein to fit these lengths. Thanks for the help.