Call me lazy, but I have enough trouble keeping my Samurai running properly without worrying about problems created by attempting to fit a 1.6 onto a Samurai transmission bellhousing without an adapter plate.
I have an Calmini plate from way back in 2000 - which might not be as good as the full-circle plates available these days - but it gets the job done.
At $150, that adds up (conservatively) to seven 4-hour days of tips from delivering pizza part time...