SOHCPWR,

Before you do anything else, Clean that Machine!!!
Fill any dings,sand it with a rubber block then prime and paint it!
Do one surface at a time if necessary.
Treat it like the magnificent piece of machinery it is!

While you are doing that you can research the electronics you will be happy
with.

I've been living with my drives for over 6 years..... and am happy with my choices!
I selected the Mighty G203V's and they run great, more than sufficient for my needs,
and definitely not under powered as some have suggested.
I built my own power supply and would probably select an ANTEK next time,
just for the convenience.
Any of the major breakout boards will suffice, you don't need to spend a lot of money.
get familiar with running your machine before investing in a smoothstepper.
Save the money for now and buy way covers to protect those beautifully hand scraped & chromed ways.

I have documented my retrofit & will happily post pictures if you think they could help in any way!

Best regards.......

W. Smith, Mission Viejo, CA