Ah ha thanks for that! Ok to answer your questions, yes when I purchased the car I had it inspected so the engine and chassis matched the log book. About a year and a half into ownership of the car I had an "incident" and wrote off the engine... Ooops !
The replacement engine was purchased through Porschapart and was instaled for me. Problem is I forgot to update the engine number at the time.
To answer the question about the quick rack, originaly the car had a manual rack. I didnt really like the fact that it required a little too much twirling betwean locks and lacked imediacy when initialy turned away from dead ahead. At the time I had my little brothers 106 Rallye (S1 1.3 with manual rack) to compare it to, couldnt believe how feelsome and direct the steering in that car was and how poor the 944's was incomparison.
The replacement unit is effectivley a power rack (with power disconected) neatly adapted to fit onto a manual shaft, in short it rocks! Much more direct, much more natural, downside is that its a pain to park. In truth this has only reduced the turns down form 3.5 to 3 but it makes quite a difference in terms of feel. Also this rack bolts direct onto the beam behind with no rubber insulating it I guess in terms of feel this also helps.
In some respects I wish I had saved myself the hassle and simply bought a 944 with power steering but I've ended up with something fairly unique.
The rack was purchased through club auto sport, cant remember their web address off hand.