can you?

[andycafe]

can you use with out any mods a 70's era 500/700 550/750 honda 4, 2 into 1 x2 exhaust system on a 70's era 400f ? thank for your help.. Andycafe...

 

[crazypj]

without mods, no.
550 and 750 are too different to swap,400 is even smaller
you can if you cut it up then weld it back together.
your trying to compare apples to alligators :

PJ