Hi, don't think you'll get much info from the European members as that engine was only used here in the 200 series but in Oz it was an option in a 70 series, so if anyone has done it they'll probably be nearer to you than we are.
I'd be interested to follow your progress but weren't there loads of electronics with that engine, etc and maybe not too much room in an HJ47?
Regards,
Rodger