Maybe not the best but:
http://www.google.de/imgres?imgurl=http%3A%2F%2Fwww.prideaircraft.com%2Fimages%2FL39-N381PA-FCP-800.jpg&imgrefurl=http%3A%2F%2Fwww.prideaircraft.com%2FN381PA.htm&h=600&w=800&tbnid=CQE7U1aJQkYnnM%3A&docid=x53kkjytadh3eM&ei=lVm2VdblHoK6swHU46LgBw&tbm=isch&iact=rc&uact=3&dur=164&page=5&start=181&ndsp=49&ved=0CIYCEK0DMFY4ZGoVChMIloTGg9v7xgIVAt0sCh3UsQh8
EDIT: Found some other Info but im not sure if there is any kind of info you need. Its more of Checklists and System Management. Its for download and I cannot view all of those because I dont have any Microsoft Word, Excel, etc,... Maybe there also pictures of Gauges, Panels and so on.
So heres the Link:
http://www.l39.com/content/downloads
regards