Will an exhaust for an F4i fit on a F4? They look the same but wanna make sure before I buy.

 

Think the midpipes are different sizes......but not 100% sure

 

The exhaust on the F4 and F4i is made up of one piece (no connection pipe). Both exhaust end (can ) are probable similar but the pipe going to the collector box is slightly different in shape, so they can't be swapped.