Rono
The band clamps work great, with them you get no crimp on the pipe , this enables you to later take the system apart, they work good on the joints evan when one pipe fits inside the other as the band will simply streach a bit more on the bigger OD side, I highly recommend them.
The jardine setup with a muffler will require 4 band clamps, but now that I think of it the Jardine U clamps are also used as hanger brackets... ... ... ... ... ... they come with the kit, I talked with Jerry a bit ago and they had the 4" on sale for 399, it is a good system and installe is cake... ... ... ... ... . Kevin