Getting a minimun destruction to interior to house an evaporator. I took the suggestion of the genII mini. As instructed by photos of Derek.
The difficulty is in getting the GenII as the vintage air does not seem to sell overseas, and the other Zshop that sells the whole kit, which might cause less destruction ( the evaporator replaces the heater core in original fan unit??) appears after I got the genII.
I have to ask my relative to get the genII from Canada and ship it to me!
As in photo I hate to say good bye to my original fan
The story started with whether to destory the originality of my 73z, on the other hand to keep the car usuable in summer 33 degrees and stucked in slowly crawling traffic , the taxi and lorry drivers with no patience.
The conclusion is YES as I like to drive my 240z around.
Thank you for introducing this genII mini, after 6 months of preparation, I have finally installed an A/C in my blue lady, it's fully succcessful and working fine. I am will to share this experience with anyone interested in doing the same.