That's what I was thinking. I figured that should just go with the 0"-2" length because with the addition of the shock conversion, it would be as the the shock was still at stock length. Just wanted to make I had the right idea. I was thinking that a Rancho RS9000XL might work for my application....
1999-2004 Ford F250 Superduty 4wd Rancho Leveling System Excl. Chassis Cab or AWD (Lifted 2 1/2" Front, NA Rear) - Rancho RS9000XL Shock (Front)
1999-2004 Ford F250 Superduty 4wd Rancho Leveling System Excl. Chassis Cab or AWD (Lifted 2 1/2" Front, NA Rear) - Rancho RS9000XL Shock (Front) - RS999264 | $105.99