Folks I am building up a Delco 42MT starter to go into my 1948 Cat D69U.
I found in post  from Old Magnet that I need the following:
Delco Lever housing p/n 10476030 which is available.
I found the Driver Gear recommended by Old Magnet -Accurate P/N 3-293 which is obsolete.   The number crosses to Van Bergen & Green Inc.  P/N 2748 who still manufactures gears.  Phone #708-343-4700.

I would like to get the manufacturer and part numbers you recommend for:
1. The Drive Housing and 
UPDATE:  We are going to convert to new Delco 39MT 12V Gear Reduction Starter.    Less weight, more torque and less Amp Draw.
Thanks.
Thanks Clemtiger.   

I'm not aware of a 11 or 12 tooth helical drive that will mount to a 39MT starter.
I sent you an email with attachments.