With 180mm swing you should not have a problem fitting the popcorn engine onto your lathe.
Drop Stew a PM and if you ask nicely he will send you a set of plans and you may also want to look up his build threads on this engien as there is often more in them than mag space allows, they can usually be found on HMEM and Madmodder.
J
Edited By JasonB on 12/03/2012 12:18:12