[x-bird]

Rock and a hard place time. valve cover just catches the frame crossmember.

sprockets out of alignment (knew that because of yerf being non-reverse output shaft)

exhaust is really close to the shock in the stock location, which also puts the shock really close to the tire. exhaust blocks a move of the shock mount to where i hoped to put it.

Sooooooo

I can cut the frame out and rebrace it for clearance. Not a real big deal--pic below.

i can make or find a sprocket spacer ...bit of a pain deal

I can figure out if this is a 250 muffler and use the smaller muffler that came with the other engine.

OR,

I can move the engine mounts back about 2 inches and over about 1/2 and resolve all three of the above in one shot.

Anyone see any issues balance-wise with moving the engine back that much? longer chain. It's a bit tricky in that if i don't go back far enough, i wont be able to get at the spark plug because of interference with the upper frame rail--at the rear the reverse cable's metal neck limits how far back i can go before it hits the frame rail.