Hi Convict
Question 1. Whats in the box (behind driver). Power pack of some sort ?
Its a powermaker from Watts. if you do a search for powermaker John (whatcharterboat) has written a very good post on them, he explains it better than I ever could (thanks John)
Question 2. Is your new chassis / base frame mounted on 'factory' designated load points or is it done differently ? (bit hard to see from pics).
No they are not factory ones, sorry mate thats all I can tell you

Question 3. Looks like 'new' colour and re-spray on cab. Any idea of costs?
Ya it is, I had it sprayed just after I got it cost about $1500