Hi Mike do you have the small book by South Bend "HOW TO RUN A LATHE" lots of information there, it can be found on the net or a hard copy at eBay reprint or original. Lots of options for chucks and prices. You will need a threaded chuck to fit your spindle nose..
I know it's been awhile, but just ran across this post. I have a SBL 8"jr. The nose is a 1 3/8" x 10 thread. good luck finding anything. you'll most likely have to buy a chuck and adapter then cut your own threads \.
good luck
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