instead of an RX7 engine, get a 2.8 or a 3.4 liter chevy v-6 and get
Kennedy Engineered Products to make a complete kit.

i know it sounds silly but if you get to develop a kit or if you offer to
help them with a kit (i will be doing that when i finish with my 3.4l
conversion), they will be able to help out much better when you or
anyone in the future putting a 2.8(3.4)liter v-6 have questions.

i called KEP about the 2.8liter adaptor and they advised me to get the
Subaru kit, and they didn't really help me much with the 2.8liter kit.

good luck,

Sudhir H. Desai                         1984 VW Vanagon 3.4 liter Chevy V-6
cdes@welchlink.welch.jhu.edu            1996 Subaru Outback 2.2 liter flat-4
sudhir_desai@geocities.com              1997 Jeep Cherokee

http://www.geocities.com/MotorCity/Speedway/1889