No worries Dianne. And compared to the Man, I know very little! As for the old HG, again, , cool choice. A good motor is about a good place to start as any. I bought my first car, a HQ Statesman, purely for its motor (I was going to put it into a panel van). Then I fell in love with the rest of the car! If he hasn't got one already, spoil DS with a HG manual, like a Gregory's or something like that. And, if he's truly in love with them, keep your eye out for original books and the like on ebay.

I'm pretty sure also that there are motor trimmers that will be able to re-trim the seats in original pattern vinyl/fabric. I know they do it for a lot of the old falcons (XK-XP), so I'm sure there would be some with Holden materials too.

Happy for any questions.