For a while now, I've been researching data and spec details for this carburetor model Ford/Holley 1904, also known for featuring "glass fuel bowl". The carburetor appears to have been used in multitude of mostly(?) 6-cylinder Ford passenger and truck applications between about 1952 to 1959, maybe later. I've discovered there are several sub-models with variety of detail and technical differences ranging from different throttle bore sizes to chokes and linkage designs, etc. Are there any members here with in-depth knowledge and willingness to offer me advise and guidance in these variations ? I'm tasked to build or recreate a (historic ?) engine (+ running gear) that originally (supposedly) featured multi-carb set-up with these atop of custom, hand fabricated intake manifold. The original engine was built by a rather famous SoCal Hot Rod engine builder/tuner over 60 years ago, but went missing along with the vehicle fairly soon after. The subject vehicle or what's left of it was discovered (without running gear) several years ago and information known today is quite scarce, but enough for the owner to pursue restoration of it. I've actually already sourced and built the basic (replacement) engine and planning to start, run & test it on the dyno some time later this fall or winter, but initially with readily available intake and carburation. Also, I'm not at liberty to share more details about the engine or the vehicle at this time. Thank you for understanding.