Yorker
Adventurer
Im not sure Alaska Spring heats there springs and builds enough to have a quality product? I have used them years ago with not good results and have seen several of there springs fail!
I cant afford on this build to have a spring fail as it will be traveling 1000s of miles away from home!
In the old days leafsprung LRs would often bring at least 2 spare main leafs in case they ran into such a problem. Sometimes you see them mounted to the front bumper in old films.