I can't see your pics- - - - -too many filters on the web at work. Do the new rims have drop centers to allow the tires to be rolled onto the rims, and if so, how are they going to clear your brake drums? Most split rims have straight centers that barely clear the brakes already. When I installed a Chevy 14-bolt rear end in my Ford F-350, (the Chevy rear was free) the Ford tubeless tire rims wouldn't fit over the drums. I ended up using split rims with tubes in the tires for the inside duals and Ford tubeless rims for the outer wheels.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!