I WOULD TRY THE YELLOW PAGE'S.....
i have had my best luck...with local spring shop's for this kind of work....
for the most part....they can rebend your old spring's....add leaf's...
make your truck set just about anyway you want it to......
you buy some on line.....??????
you install them....there not right...
your stuck....and still have to go to the local boy's....
your pal mark....aka....
RAGENRAT638 