Well you never know.... The Autech pistons could have a higher deck height, or the block deck height could be lower... If there's a smaller piston to head clearance, the valve notches would be needed obviously.
I think this engine is alot more common than previously thought, especially now its known that it has minimal differences to a standard highport. I would say those South African N14 Sunny's with the claimed 180bhp are using the same engine
Everything's looking just great Dale. Very impressed by the BTCC head after having a look around it.
You've got your head screwed on so I'm sure you'll make the most of this build's potential.
Time to invest in a dial gauge and other tech cam timing adjustment gear boyo!!