Early 67 L48 engine details

[Petes L48]

Newbie here, please excuse if these have appeared earlier.  Car is RS/SS conv w/ air, 11/11/66 LOS build date

For the script chrome valve covers, on which side does the one with two wire tabs go, and what do the tabs hold?  I don't see this detail in the AIM.

Oil filler tube, chrome or black?  Car is closed element if that matters.  I have a NOS Z28 3889316 tube bought several years ago, but AIM lists a different part #.  Seems like the repop suppliers are pushing  chrome Z28 version as a correct tube.

For the crankcase vent tube, the AIM shows hose 3883966 and a tower clamp used to connect the tube to the air cleaner bottom tube.  Is this available anywhere, or is their a suitable alternative?

Lastly, did the Powerglide use a 14in 168 tooth or 12.75in 153 tooth flexplate?  My car is in storage a couple states away and I wanted to order a new one in advance for replacement during an engine swap.  Never had it apart before.

Thanks

[plumL78]

It goes on the driver's side and the tabs are for the temp. sender  wire .

[Petes L48]

Been awhile since I've done anything on the car, forgot about that one.  Thanks.