What case is that in @Bradford ?
I put the BUF-A I got from antares into my little home server. I replaced the fanless aluminum heatsink on my new A1SRM-2758F. It's been on for the past 3 days nonstop and it's holding at 22 C. I had to use washers for the new backplate - I used some soft-ish rubber ones that seem to work pretty well. The backplate was kind of hard to get off because of the tape, but I didn't use a heat gun. I just eased it out with pressure.