Thank you Dave, although I have been here for some time. I heard we missed each other at Ambush this September. I heard your car was great! I see it in your building logs.
JD, we would do that, if you ever drove any hillclimbs ;P
Horizon, yes those lower frame rails flex a lot. Much more than any motor mount would. I leveraged motor with jackstand handle to inspect motormounts and was in awe how much the support points moved. Since then the motor has been stressed member of the frame. This second one will be done the same from the beginning. Well balanced Miata motor did not transmit (new) vibrations to the frame, I would think smooth six will be same or even better.
I like turbo's a lot and that is the main reason for engine choice.
The last straw breaking the resistance was participating DIYAutotune Megasquirt day this autumn and witnessing this:https://www.youtube.com/watch?v=m-SOUzyAPfI
and after using higher gear to reduce torque, thishttps://www.youtube.com/watch?v=SirpOKTYEIM
On a same dyno where my car pulled 320 hp a week and a half before that day.
I was goner.