He's talking about swapping in a solid 4x4 axle for his twin traction beam axle John.
Rusty, there are a few guys around here that have done that swap. You might want to try your question on the suspension and axles forum. I know there is a guy that lives in Chapel Hill doing that swap but I can't remember his name right off.
2006 F350 SD CC 6.0 FX4 Dually (real trucks don't need sparkplugs)
1985 F150 4x4 351W- ol Blue
1989 Full size Bronco 5.0 5spd 3.75
1976 F150 SC 360/C6
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