Thanks for the info. I bet you were a bit nervous cutting into the bonnet like that? Looking at the engine when you got it I see how much you have had to change to get the intercooler in place - well done I really take my hat off to you.
Did you know that a competition RX7 exhaust grows 1 inch in length due the heat at the end of a race? I guess the engine run hotter - they certainly seem efficient units if you look after them.
Do you go on trackdays much?