Welcome aboard!
Best place for the T-16 manuals is Portrayal Press
http://www.portrayal.com/ but you need to hurry as they are closing down. Shoot them a message at their web site and they should be able to give you a price with shipping for all the wartime manuals as copies.
Also good luck getting that rear armor welded up for the differential to bolt back up. Seems a lot of the carriers had that section blow torched off as it was the fastest way to strip the rear end off since it saved having to turn bolts. A lot of bogie suspension units were similarly destroyed as a fast way to remove road wheels.