Volume 1: 1982;Covers engine, chassis and body. Very good/excellent condition
Volume 2: 1982; Covers transmission. Very good/excellent condition
Both manuals appear to have never been used (no smudge/grease prints), Vol. 2 has minute discoloration on back cover.
DME Testing Plan: 03/1982 #WKD 450 821; 24 pages; cover shop worn per photo, inside very good/excellent condition.
Service Information: 01/82; 113 pages, cover damaged per photo, inside very good/excellent condition, see photo scan for table of contents.
EBay:
Porsche 944 Workshop Manual Volume 1 2 Service Information DME Testing Plan | eBay
Glenn