Will a Hawkeye backbox fit a classic
 

Thanks

Sort of.
The middle hanger wont fit, so either bend it out of the way or bend to fit.
The rest of it will line up OK

Dont know, but i fitted a classic exhaust to my bugeye the other day and as "Butty" said all bolt holes lined up and the 2 hangers near the pipe exit also aligned, but the rear hanger didnt line up (faces opposite way), but i disregarded it as i already had 2 on the backbox and the hangers on the mid pipe did enough of a job for me.
Thanks Cal

Thanks everyone - worth having a go since it should be a freebe.