Just a quick reminder. A straight pipe is only legal for an off road only vehicle.
...depending on your state or province...
I thought having one was required on a federal level. If theychecked for it was on a state/province.
If not, my bad. I know Federal parks in the US require a spark arrestor of some sort, which means either a catalytic converter or a non-straight pipe style muffler (aka Cherry Bomb).
That being said, my SJ-410 doesn't run a cat. We didn't put one one when we put a new exhaust in place. But it's a trailer queen.