Seeing as you wrote "High quality and perfect fit are of utmost importance" I wanted to point out my long term experience with a replica kit so you (and others) can better prepare.
On the bright side I just installed my freshly painted bumper and sunroof, It made a huge aesthetic difference! I had to repair some damage, build brackets and profile around the turn lights (they never fit right), sand and fill all the stone chips and spider webs, reinforce some areas and rebond the rebar , replace the hardware useing SS bolts/screws where possible. I did most of the prep work myself, it took a long time and made a mess of the basement. Next stop is the back bumper after a short break
I don't want to deter you from your goals and this kit really does significantly update the look of these cars.