I will have to dig through them this weekend and reply back.
Topsites are private SSL servers that release groups use to distribute their files to the masses. I can't give you any names of them as they are all private (and the leaks were on them last year, no idea if they still exist on any today as most don't archive such things).
I can probably post the file names of the leaks I have archived, but you would have to try hunting them down on your own. Chances are, it will be difficult unless you know someone on a topsite with them still or who can request them on one.
Update: I checked and none of the 1.6 leaks include the 1.6/1.8 compiler nor the required dtnetm file (which links the Debug and PC). However, there was also a 1.92 FULL $DK leak last year (CJPC reminded me of it tonight when speaking to him on this stuff) and the rar is called 192_sdk_full.rar (643MB) which contains PS3_SDK-192_001-Installer_1.0.MSI that includes everything needed. So in short, that is in public circulation and is probably what those out of the loop should be seeking at this time.
I am not sure if any are complete, some just appear to contain more files than the others.