Juan62, Mine is a 1994, 850. On that, the Knob simply pulls out but must be yanked pretty hard. Once that's done, you pull up boot the same way after releasing its bottom frame from the place where it fits on the console. (Matt01 has pictures of it) There are clips inside both the knob and the boot ...

MadeinJapan,

Where can I can get those tools: drift 999 2412 and support ring 999 2852?

thanks