Depending what year your truck is, you could always just put blocks under the front. I'm not sure what year they stopped putting leaf springs in the front? Actually, Im not even sure 2wd have leaf springs in the front?
I know the 4wd are leaf springs, but honestly I'm not sure what they run under the 2wd. I would assume springs but they might have done leafs just to make the trucks easier to assemble in the factory. But than again what would they butt the leafs up against? The suspenion arm(s)? Im pretty sure they're coil springs. I'm wondering if the ones posted above would work on the OBS