Bad thoughts V twin or Subey flat four into a hatch
The crank (e-shaft for the mazda buffs) was actually easy as it is straight with a single eccentric with 15mm o/set (from memory)and I got Ni chrome molly from a scrapped large con rod ,then in the lathe.Reckon work in the front bearing area would be required (machining) But never got there as mentioned above.
Get with it ,Get over it ,Get on with it .....OR LEAVE