Errr, wow! That's like a $15k lathe ... for "an automotive hobbyist"?

 Sounds like serious workshop professional to me. I'm guessing you had a pro workshop of some sort. A shaft that big, that needs lathe work, will get farmed out or replaced. How many complete S1 Land Rovers could I buy with $12.5k?

 ($15k less the $2.5k for a hobbyist lathe?). That'd be somewhere between 6 and 30 in my own experience

. 
So with a SB of 38mm, swing of 160, centres of 600mm and speed range of 60 to 1600rpm, the AL-320G doesn't cut the mustard. Food for thought.
Cheers
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