Last year for solid axle
#4
Excluding '79 and older trucks: you should be asking about the first year for SFA - late '85 is when the F350s started getting the D60 monobeam, and they still have it to this day. The D60 front is the same between SRW and DRW trucks, difference is in the hubs and hub extenders that duallies have so converting a D60 to match SRW or DRW is not hard if you got the hubs and related parts. F250s never got a SFA until they started being labeled as "Superduty" trucks in late '99. F150s never got a SFA, period.