I was headed that way but thought I would ask.

Thank you for the direction.

Once the mods to the casting are done, What do I do to time the Holographic Disc to the TDC of the CAM, Crank, and Compression of Cyl-1?

I got those too.

Set of R6 carbs. Just can't find an adequate carbon filament 3D printer for making the intake bits. Little more complex than my mill can machine out.

Hmmm.

Too late I'm committed ;)

I will have to look into this.

Yes, and I wish he had done a write up.

I will have to shorten the SR drive shaft to allow for a good mesh of the A12 gear with the CAM drive.

Then I need to machine a spacer as you can see the output portion on the A12 dizzy is shorter than the SR body.

All this for getting it aligned right.

Yeah my DOHC A12 is on hold while the car is returned to the road this summer. Once the car is to my liking (drivable and painted) I plan to finish the DOHC project with the 1.5 Mazda Z head.