Atelier Almeras P911 tune up info/picts needed

Hi guys. I'm working on a few Porsche 911 Gr.4 of late '70-first '80 period: like the "Esso" or the "Gitanes" 911. I found some material but I never seen a picture of the tune up job done on engines and mechanics. Mainly I'm searching infos on injection system and exaust configuration. I have some reference pict of jobs done by one italian atelier called "Orlando" that tuned the '81 Mille Miglia rally winner "Ricard" 911, so I have few ideas of the job to do to update a flat 6 to the maximum allowed Gr.4 level. I though would be worth try to ask before someone say me "assh#le gio I got the pictures, stuff should be so..." :D

Also interior's details would be appreciated, mere informations also without pictures would be OK!

ciao

gio