Hi thanks for the feed back, I pick up the unit from a fellow club member (TSOA Victoria Australia) It’s just like the one in the Moss catalogue.
Anyway when I pulled it apart to have the heater core cleaned, one of the HVAC engineers at work (GM Holden) advised that being a sheet metal case I should insulate it. So it has been fully lined with 2mm self adhesive close cell foam.
The unit is deep and thicker than a heater unit. The air outlets also change shape and location. When the unit is in the car, the studs in the fire wall line up with no problems. But the unit sits hard onto center support and the bent brackets use to support the HVAC unit are not the right shape or length.
The other problem with centre support is that on the steering wheel side the opening for the air outlet no longer lines up with the one on the HVAC unit.
I need some photos to see how much the centre bracket changes.
If you go to the following web site
www.victoriabritish.com
select the TR7 Parts cat.
Select page 59 you will get a view of the heater components.
I have item 15 in my car, it is for a heater W/O A/C the opining on the RH is for a heater and interferes with the outlet for A/C. So I need a support that dose not have that configuration on the right hand side, The bracket I require also needs to sit further to the rear of the vehicle.
Also in the A/C unit on page 63 shows that it in deeper in depth and the side air outlets are square. I need the RH side square shaped one. (item 2 on page 63) which is no longer serviced, looks loke I will be making something up.
In the engine compartment I will be using the compressor form a Holden (Isuzu) Rodeo 4 cyl. Thought I would use the front pully of a Saab 99, guess what, different crank diameter, so I am lloking for a pressed steel pully to fit into the triumph pully as I don’t think I will be using the OE part.