Ah yes... I remember when Burner was replacing his IMS bearing:
http://986forum.com/forums/boxster-cayman-parts-sale-wanted/62324-wtb-ims-center-bolt-dual-row.html
It can and has been done other ways and with cheap homemade tools, but the only reliable safe way to do it is with one of Jake Raby's tools. I was lucky to survive my first try with set-screws back when Jake was still taking time to post on the forum.
rbayer, there are some people on the forum that loan or rent the tools. Tom Stone did and may still have it available, or Post a "Want to Rent/Borrow" thread.
http://986forum.com/forums/boxster-cayman-parts-sale-wanted/60242-rent-ims-installation-tool-set.html