I guess I'm a little late to the party. I just unboxed my T60's tonight.
They do come with a rubber pad on the bottom to help isolate from the cabinet. I plan on building my face frame in place, around the speaker, to get a good fit. They are heavy, and I think if I build the opening first, I'm going to have a hard time sliding it into place. There's about 1/2 lip all the way around for overlap.I will probably line the front edge behind the baffle with some thin weather stripping as well to keep it from rattling.
I got mine with black faces and black cloth just to keep it simple. you can get a paintable version, or a real wood version to stain to your liking, but it doubles the price.
It sounds like you're settled on the M22's, but I thought I would at least add my $0.02.
