Exhaust Pipes
 

Can anyone confirm whether the down pipes from the 73-74 vintage 450 SL would bolt up to the 560 exhaust manifolds? In reviewing the service CD and pictures of both manifolds, although different, it looks like that they might work. Also, if this did work could I weld a bung in the crossover pipe for the O2 sensor? I am not sure whether I would want to go without cats though. Bergworks has a free flow bolt up cat system but I would like to know all of my options.

Thanks,

BD