will a axcle back muffer off a 89-91 civic fit on a 90 integra?the style of muffler that comes back the passenger side and exits the drivers side.will it bolt up?it looks the same

 

If im not mistaken the EF civic's muffler will have lower clearance. Im not too sure if the hangers are in the same spot or not though...

 

well if the hangers arnt in the same spot thats a easy fix jus hold up the muffler and weld on new hangers to go where the rubbers are. thats not a major issue, if u want u can try it out its pretty much the same design.