Re: heater box
REasonably. If you can get the whole lot out of another car( including all the piping for the dash etc) you will see how it goes together. Where the 'new' holes in the firewall are required you will see it is indented or raised in little cirlces (if you look at the firewall you will inderstand that one). You will also need the vacuum lines etc to make it work, and tap in somewhere in the manifold. If you are determined and careful, and pull the unit out of another car to see how it goes together, it is possible. I did it on my old coupe. It caused a lot of swearing etc but I got it in there eventually.
Cheers and Regards Autosignature - removed when Minginator comes to Qld
Member - ATPS - Automatic Transmission Preservation Society