I am Sorry if I sound Like a FAN-BOY of this vendor, but it just based on my experiences and I fully support this product.
She is 25 Now and they grown up fast, & the Car has been in my possession since Nov 1983
Gardner has a production lead time (For Systems) like ALL supplies these days, be ready for some delay.
I think Scott is echoing the dreaded Muffler "Crimp" debate of a few years ago.,,,,,,,,,,,,,,FWIW