your lucky that's all you trashed in the head on collision, i was in a head on collision end of last season that snapped the right side lower fork tube, shattered the wheel hub and mangled the wheel, crushed the pipe and cracked the engine cases, not to mention the broken thumb i got and the broken right leg the guy i hit got, anyways, i don't think you would find the addition of an fmf pipe too much to handle it's all in how you use it, in your case though i would go with the torque pipe and not the rev pipe