Well, first I want to say welcome to the site. The information here will be an invaluable source to your questions.....
Second, I want to say that you need to read through the V8 forums for answers to your 383 questions, all the info is there and probably in triplicate.
Third, I'm probably willing to bet that ebay may be your best bet for the plastic trim for your steering column. I've never had to look for that piece so I couldn't tell you for sure, but those things typically show up on ebay frequently. (I may have a spare that I'd let go if your interested)
Fourth, enjoy your stay here at HybridZ, and before anybody else says it to you ...... remember to SEARCH, SEARCH, SEARCH!!!
Once again, WELCOME!