OK this sounds like its gotten off topic, i will attempt to get it back on topic....
you cannot swap your lockouts from the IFS truck to the SA truck. they are not compatible
there is mention of ifs hubs with the SA -- this is not quite right. what is referenced here is using the ifs wheel flange with a $$ spacer that will widen a solid axle. it has nothing to do with the lockout part, that is not interchangeable