My view is detonation killed past charged zeds due to lack of control over fuel and timming due to the bassic nature of the smart power 6 ecu and high tempreture.
There is a newer gen of ecu to the 6 and it will adjust the timming aswell for the boost. And I would run water / methanol injection to cool the charge.
From reading Garry's post he uses a pp smt8 and water injection aswell as forged pistons and gets good reliable power.
I feel the standard pistons will hold 5 psi for raod use.
As said Its not for sale due to me thinking its no good. Ive bought another project and want a cash injection for it.
I wont be upset if it does not sell.