Grigg's tech info is great and I am going to do just that. The tolerances for the new vs old king pins for me are just .07". The spring shop guy said they have a guy that can make those bushings in the shop no problem.
I've done one of these conversions and it worked out nicely to simply bore the stock P-30 bushings to fit the new (for your original axle) 2 ton king pin/bushings kit. I removed the used P-30 bushings, chucked them in the lathe and bored them close to size, then re installed with loctite sleeve retaining compound and reamed them to proper size, finally install new bushings and properly ream/hone to fit kingpin.
Your best bet on finding the P-30 axle components you'll need is to buy a complete P-30 front axle. Unlikely you'll find them new at a price you can afford and best chances of finding them used is a complete axle.
Grigg
