The 3800 front axle should handle the engine weight OK, especially if you add a couple of leaves to the springs. My 59 Burb is going to get a Caddy 500/Turbo 400 setup, and it's already got a Dana type 60 3/4 ton rear end from a 70's vintage GMC. I'm planning to narrow a disc brake equipped 3/4 ton independent front suspension system to replace the 1/2 ton 6-lug front axle that's under it now.
Jerry

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