When I rehabbed my 1991 model performer, Weber was out of the "Old Style" ash catcher ring - the one that used a metal bar to attach the ash catcher ring to the bottom of the grill. So, I ordered the "new" model - the one that uses tabs that insert into slots cut into the top of the leg stubs on the performer. When it came, I just used a Dremmel tool to cut the slots into the leg stubs, then popped the "tabs" into the "slots" and I was all set to use the new ash catcher ring, ash catcher and handle, all of which were readily available from Weber.
I had to wait a while on the ring since Weber was out when I ordered it so in the meantime, I went to Lowes and bought a metal paint bucket and sat it under the one touch system so the ashes could drop into it. I tried a couple of "charcoal" or "ash" buckets that I had here at the house but they were too tall to sit on the rack underneath the bottom of the grill.
If you want an "authentic" fix, call Weber; if you want a "cheap fix" go to Lowes. FYI I posted a request on the Weber Virtual Bullet asking if somebody had an ash catcher to sell but got no responses.
Pat