1950 Plym P19 Biz coupe getting '55 DeSoto Hemi. Suspension /brakes?

[Graefen]

I have a stock running P19 busines coupe and just purchased a '55 DeSoto running Hemi parts car.   The plan should be obvious.  Out with the '50 flat six and in with the '55 Hemi.   

Much improved brakes should be a priority here.

 

The Plym has 10x2" original brakes, DeSoto has freshly built 12 x 2.5 brakes.   Can I bolt up the backing plates of the DeS and use the bigger DeS shoes and drums onto the Plym king pin /spindle?   Or, are the DeS spindles longer and heavier diameter for the hubs and bearings?    I would have zero additional cost using DeS parts if possible.

 

The question might become whether I need to change out the king pin /spindle AND the HD DeSoto coil spring to complete this upgrade.

 

Your experienced knowledgeable comments needed and appreciated!  Thanks

[Booger]

sorry I cant help with the brakes..but I will say this. Thats a primo biz coupe. Some might say if youre going brakes why not the disc conversion?

[Graefen]

5 minutes ago, Booger said:

sorry I cant help with the brakes..but I will say this. Thats a primo biz coupe. Some might say if youre going brakes why not the disc conversion?

Because the "already rebuilt" DeSoto parts are already paid for and would be a significant upgrade in swept surface area.  Thanks.

[Sniper]

I don't know for sure, I'm thinking no, but @Loren would know.