Hi Jeff
good to see you at Llandow.
You may have noted that my SL has a comp exhaust, and is also a 2001 car.
For the mot I will put back the origanal exhaust as this is the cheepest option. Raceline do a silancer with a cat as a direct replacement for the comp silancer its about £400.
If teh SL does not have the standerd cat exhaust when you get it either buy a second hand exhaust or you can borrow mine if the MOTs are not at the sametime.
Keep well
David