Most states it is illegal to use blocks on the front axle as it allows twisting of the axle under hard braking and subsequent steering changes that can get you in deep kimchee!

Best method is to find a dropped axle that fits your truck. uses all the stock parts except the steering arms wich need to be extended to keep from hitting the frame, they can be bought at most places that sell the dropped axles.
Pretty simple swap to do, and loads cheaper than IFS.

1956 GMC 370 dump " 'Tater "
1970 VW Volksrod "the Black Bomber"
2007 Chevy Avalanche
2020 Jeep Cherokee Trailhawk,
2005 Harley Davidson FLHTCUI

I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion! :P