When solid axle swapping an F-250 with less than 3" of lift the flat pitman arm is useful to get the full steering on the Ford straight axle.
CHOOSE STOCK APPLICATION FOR OPTIONAL REAMING UNLESS YOU'RE SWAPPING IN A 05+ COIL SPRING AXLE
-F-350, factory Dana 60 axle
If you're installing the 3 inch reversal using stock worn out springs, we don't feel its necessary. The reason is, your not gaining 3 inch's of lift over stock, your compensation for old springs, probably only gaining 1.5 -2 inch of lift, some times less.
-F-250 installing a reversal and Dana 60 80-97 axle
The f-250 has a shorter throw than the F-350, so to get full turning radius you need to either swap on the Factory F-350 arm or this drop arm. The determining factor is if you are using new F-350 springs, or refreshed as some springs shops term it, you should use the drop arm, which is only actually 2 inch's of drop over the f-250 arm, but longer to allow full steering. If using worn out springs, then switch to a stock F-350 arm.
-Super duty leaf conversion ( FSRSD ). Yes, it's 4 inch of lift.
-Super duty axle leaf conversion. (FSRSDAL) Yes, it's 4 inch's of lift.
-5 inch Shackle reversal under anything
Yes, its a 5 inch lift, and if your adding it to other springs you need either our Ball Joint 60 crossover kit, or a king pin 60 cross over steering kit depending on donor axle, not just a pitman arm.