Those are the new ones, right? They're fine. The upper driver is a little funky but you could replace that with the BT Productions driver (which is awesome!!)
Another option is to look for a 147 which is the same as a 122 except for the amp. But you could pop your 122A amp in there (which is what I use... a new 122A amp from Hammond/Suzuki through an old 147) and you'll be good to go with the original (hopefully) drivers and crossover.
I just picked up and restored a 21H. Ooooooooooooo..... there is nothing like a 21H. Single speed, yes... but the sound. If you know the Rudy Van Gelder organ sound from the 1950s/60s then you know the sound I'm talking about. Field coil 15" Jensen woofer, powered by four 5881s, alnico horn... it doesn't get any better. Best sounding Leslie for Hammond ever made, in my opinion.