You want a South Bend Heavy 10. 1 3/8" spindle hole and a few different bed lengths. Here is a good example. I got one with a 4 1/2' bed for under 400 bucks and sold some of the goodies i would never use and payed for the lathe...Bob
http://cgi.ebay.com/SOUTH-BEND-Heavy...item2556ab0c4d