Anyone know what the last year for a crew cab long bed with solid front axle was?

 

What truck you talk about?

F350 still have solid axle 4wd

 

Really i must have been missinformed 350 would work with single rear wheels.

 

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.