$93 apiece, free shipping! Now, what would it cost for the non-machine shop person to acquire the manifolds?
Price at Ron Ayres Motorsports currently for a single carburetor diaphragm:
. Diaphragm Assy
1FK-14940-00-00 1FK-14940-09-00
$117.52
https://www.yamahapartshouse.com/oemparts/a/yam/50045c0ef8700209bc7942f3/carburetor
I'd be interested to see the throttle hook-up, is it possible to use the OEM two-cable system? How do the two throttles for the two, two-bbl bodies attach?
Thinking more about the venturis for the carb mounts, since everything is 'stacked,' couldn't you print an insert which would just sit captive between the two carburetor mounting plates, providing a smoother path for the airflow? Kind of an offset 'funnel?' You might be able to tune that, smaller path for higher velocities and more torque, larger path for a high in the rev-range power bias. A wild idea: a pneumatically-operated bladder which changes the diameter to suit your intended use! Since the volume of the area is small, it should be quick to pump it up/make-smaller the venturis for a torque bias, and also the opposite: let air out to enlarge the passages, for a high horsepower/high rev band use, like at the strip.
A question about the 'RamAir' foam air filter elements: are they just 'socks,' which slip-over the carburetor velocity stacks? How well-sealed are they to the velocity stacks? They appear to be running dry not oiled like a SS mesh and cotton gauze K&N. How-dense is the filtering material? I expect that something like that is a frequently-replaced item, if you want effective filtering. Is the overall shape of the filter like a can of Spam, with a couple smaller holes cut-into the bottom of the filter, so you just stretch it over the velocity stacks, and rely upon the elasticity of the foam material to provide a seal?
I have to say, this is probably one of the biggest new parts introduced into our VMax world since the Ignitech provided us with an alternative to the OEM CDI ignition box.