Thruxton engine on a Speedmaster
Long story short - have a 2005 Speedmaster with duff engine (castings that hold starter idler gear disintegrated - relegating engine to parts) Want to put a low miles used engine on Speedmaster and have a line on a low miles Thruxton engine. What needs changed on the Speedmaster to make Thruxton engine work? Igniter? Coils? Carb jetting? front final drive sprocket?