Originally posted by Tourige:
Mine did not have a gasket on it..



Another vote for the donut. I put the MSDS Y on my car and required exactly 0 gaskets.

However, the Y to Cat connection with the donut has some special bolts/pins--crazy expensive and I couldn't get the pins out, and I ended up breaking one of the bolts because I didn't know what I was doing. I still need to go back under there one of these days and fix the redneck engineering I did to get it all running.

Function before fashion. '96 Contour SE "Toss the Contour into a corner, and it's as easy to catch as a softball thrown by a preschooler." -Edmunds, 1998