The man wants MORE caster. How about this idea?

Why do the aftermarket UCA's have different PN's for the 3 different spindles (9" or 10" drum, or disk), since factory UCA's were the same PN 1963-72?

I wouldn't cut and re-weld the factory UCA's since a lot of effort for no-bling. But, I wouldn't worry about safety when you compare to factory control arm failures in other cars (google). I reviewed that during an internet fuss by "experts" (never swung a wrench) over a temp fix I did to my 1984 M-B to drive it home, saying I could have killed people. I found many early 2000's M-B lower control arms failed by rusting thru from the inside (hollow tubes, unpainted inside). They look fine until they break apart. Ditto for many other cars. Usually happens at low speed in parking lots when turning sharp (highest loads). Even at speed, one can still steer with one wheel splayed out, and the car usually drags on the ground to brake the car, so rare to cause an injury or even damage to the vehicle. The UCA's in our cars see minor loads, and just orient the spindle. One aftermarket UCA for our cars has experienced weld failures, which is strange since it looked like a slick design with nice-bling.