Hi Mark
I posted in that thread too. Keep in mind that when people ask for the total cost of the CA conversion that's what they are given. To me, this means diff, cooling systems, suspension and brake upgrades etc, etc, etc. To build and install a correctly engineered 200hp A series turbo would require you do all this anyway.
Keep in mind I'm not talking about your basic suck thru or blow thru J pipe set up as there is little point in comparing these to a CA anyway due to the large power difference.
Anyway it's all food for thought.
Regards Matty