leafs have been done before, just not in the US, that i know of. there were at least 2 rigs in either Korea or Malaysia that ran leafs with Scout axles. there are 2 issues with the Scout axles- one, the inner knuckle C's will need to be turned for caster and the outer knuckles will need to be replaced with the afore mentioned 75-77 (i think) waggy knuckles. if i recall correctly, chevy's only have a flat-top knuckle on the driver's side. this is not only to get high-steer. it is for 2 other reasons, the knuckle steering arm is way loo long to get even a remotely straight line from the steering box to the arm with a drag-link and if you move the axle forward any, it will be even worse. so, either move the steering box forward, a lot, or move the arm back.

and then there's the wheel bolt pattern....

Scout knuckles have 8 spindle bolts, Jeep and chevy have 6. Scout axles have a 5-5.5 wheel bolt pattern, Jeep and chevy have 6-5.5. so, you may need to find some way to get the Scout spindle back onto the Jeep knuckle or go to Pirate4x4 and look in the Tech section for all the correct Ford parts to swap the knuckle and keep the 5-5.5 bolt pattern.

it's a long road. have fun.