Boyd the Chinese machines appear to be fantastic value and terrific bang for the buck. We are currently helping a guy get one going and trust me its an absolute nightware. There simply is no usefull support and software is all illegal. One not so silly option could be to plonk all your old SB innards on the Chinese job and you could end up with a half decent unit. You really tend to value your Shopbot a lot more once you start battling with no documentation/ support!
Buddy BT48 with 6' power stick
2.2 HSD Spindle
Aspire 9.5
6" ShopBot Indexer