Pulled the Mess that was my Timing Chain....

Good pics, very informative. Yeah, the metering body looks like it is very broken there. Not sure how that could have happened.... the check ball could be from in that chamber and would have been sealed by the brass welsh plug that probably broke out.

The spring is supposed to go under the float.

What are the 2 stamped 4 digit numbers just above the float chamber?

Looks like a later 1920 but I am not an expert there. The metering body looks different from my very early Dart. The most experts for these are mainly posting on www.slantsix.org. You're certainly going to need another metering block at least.