yes, it is possible....just, the bolts are probably gonna need cut off...and replaced....when i did my clutch, i had to remove the header and what not....and in order to get the header out of the way, i needed to remove it from the cat....so...yes it can be done....infact i´ll be doing mine, i have an obstruction restricting my airflow,so....i hope this helped in some way shape or form