This page is full of adapters to mate the HF1A and HF2a to 4-bolt 4L60's, 6 bolt 4L60's, and the 4L80e: http://www.marks4wd.com/engine-conversions/transfer-case-adaptors/toyota/landcruiser.htmlTurns out there is no after market adapter to mate the 700r4/4Lxx to the stock Landcruiser 80 series transfer case. Fortunately the 60 series transfer case has performed well - albeit a little sticky. I checked with George of Valley Hybrids. He's been working on Landcruisers for a long time. He confirms that a 4L80e will fit.