34ADM Weber on 253 ...Photo Evidence of my crazy idea's (but actually pretty damn good)

Hi John, thanks for the offer, but I want to hang on to it. Just took me so long to make. Hours with the Hole saw, and even more with the die grinder.
Your right about the primary favouring the rear or secondary. Throttle cable lined up better but the main thing was I figured the more open secondary was more suited to the transition from one venturi to two. I had a 1/2 inch spacer under this as well so there was mixing between front and rear ports anyway. It is not unusual for adapted carbys to reverse primary and secondary. When the weber is used to replace a Varajet on a 6 it also swaps primary and secondary.
I purchased the slab of solid aluminium as a scrap off-cut from Capral Aluminium at Geebung in Brisbane. Cost about $40 at the time. Then I purchased a Die grinder and bit, then a 40mm high quality metal hole saw, then cutting oil. I had to cut through 40mm of aluminium twice (nearly killed the bench drill) then about 2 or 3 hours solid with a die grinder. (nearly killed the poor air compressor). It is a great mod BUT if you don't have access to an engineering workshop be prepared to put some time into it. That said it is a very interesting one off. If it was straight forward I'd consider making you one but I've got a ton of trouble with house reno's at the moment, so just don't have the time. Any how, I've confirmed it can be done, and it does work. Also, you have seen how I did it which is I guess one way of doing it. There are probably other ways as well. You do need a lot of bonnet clearance though. A9X scoop or similar.
Cheers
LMH