The first parts I took off were the carb and manifold,
so these are also the first parts to be modeled in CAD.
The manifold was quite simpel, for the carb I started
with a copy of a WR carb I had modeled a few years ago.
This Knuckle has a beautifull M-74 carb which is kind
of similar to the WR-Carb, but still a lot of details
will need to be changed. Time spent sofar 3 hours.

Tools used for measuring: digital calipers only (sofar..)