I was never a very good mechanic a lifetime ago but here goes. Don't bash the insides out, if you must take the box off cut with a grinder from the middle out so you can see the baffles then access the box and remove the plates carefully when the box is empty weld a plate back to the box. This is best done on the top of the box so when it is re fitted it still looks stock from the underneath.Be aware your engine may run a little leaner and therefore hotter whip your plugs out after a tank full and you should have your answer. Personally if you have sports cats and a sports exhaust I would leave well alone but we all have choices.It will sound good though...
