HELP 10 inch sbp rear drums or modifications to front drums

ya know, I fooled with these old mopars since mid 80's and all the problem with parts.... I got 3 early a bodies, 2 slants and the one 273 car.
these cars have pretty pooro value even restored, . ( just venting i g uess) used to could find a bdy 8 3/4 no problem. now a guy could get 400-500 for one complete. don't see 8 1/4. yea I could make 8 3/4 b body work, but then ya got to get disc or 10 in drom up front and change all whells and tires! LOL no I don't want to use ford and later jeep or mitiscbitchit! LOL
just a rant! I see a 10 in rear drum new on stupid bay f
or $299.99!
someone please tell me why I can't have from drom cutdown to correct width!!!!!
why doesn't anyone have china pop out the sucker, along with all the other crap they make!?????????? LOL
wouldn't pay that if I was wealthy which i'm far from it...

I will pose this question here. I searched but got dizzy lookin at everything but what I was huntin. the 10 in rear drum thing, I see none new anywhere except on stupidbay and I won't give $299 for one.
anyone with experience cutting down the front drum to use as rear???