Hi Peter,
Thanks for reminding me about the DCO&E manifold. We've actually done a couple 347s with them fitted with 50mm throttle bodies (no problem with a/f ratios at high rpm - Ron
I haven't been able to source the manifold on it's own here, can you PM the contact info for the manufacturer,thanks.
There is some time to be saved with the vacumm chamber cast into the valley area, however the total cost of the setup with cold air box and blast plate, Webers and linkages is still hard to beat buying in the USA.
Our adapter spacers do give us the opportunity to ad more ports for things like PCV and even an idle air control to compensate for accessory drag like A/C and lights. So we can make it look original and pick up more functionality than can be gained from one common vacumm chamber.
By the way Ray, great pics and I'm glad the initial settings were close enough to give you an immediate seat of the pants response.
Here's our 347 EFI installation with the motor just about as low as you can go!
Cheers