Griz
You could be in for a ride of a life time with this one, I have installed mine by guess work and listening to the upholsterer at a Healey refurb centre.
There are some 30 or so clips that clip the rear of the hood to a metal strip ( it is j shaped in section ) that is screwed into the edge of the channel from inside the cockpit. the metal strip is turned over at the top to overhang the channel and it is this edge that the hood is clipped to.
But before you do that there is a need to mark the centre of the hood front and back and also the centre of the rear of the cockpit and the front bow and the metal strip to get the alignment. I used string to space out the hood sticks and then fit the hood around the rear of the side screens ( temporarily using scrapes of vinyl as a washer and the odd tack) and to the front wooden bow again temporarily to get the spacing right. Then you pull the hood down at the rear and mark the line of the channel on the hood (in a crayon that can be wiped off at a later date) as a guide to fitting in the metal strip and the clips. The metal strip is then screwed to the channel. ( it may pay you to dry fit the strip to the channel before you fit the hood, using some scraps of vinyl as a spacer, as holes may need to be drilled for the self tappers) The fitting around the rear can be a trial and error situation and it may all have to be unscrewed and the rear re-clipped to the metal if the hood does not look right. Before I screwed mine in I found that several small clamps helped to fit the metal strip to the channel so that I could see the sort of finish that I would get. I found it impossible to get the rear window to be taught, and looking around many Healeys, it does not seem to matter too much, you can easily see through it in the driving mirror. Once you are happy with the result then you can start looking at permanently installing the hood around the side windows fitting the webbing and pulling the hood over the front bow and fixing to it, and trimming any vinyl projecting from the bottom of the rear metal strip. You need a warm day it helps the stretch.
Best of luck
Bob