Just about any independent shop would do this for you. For $1,800 that thing better make snow

 

Well, at $1200 for the kit, you would have $600 left over for installation. That'd be more than enough. $1800 for only installation? No way.

 

Yes the instructions will be in one of the boxes.
Yes a regular shop can do this (it is a very simple bolt in process). With a 6 cylinder car, it is even easier to install. There is much more room under the hood to work with.

It would be worth your while to go look at the link I postd above. There are a few things that should be done differently than the kit instructions show. Especially in regards to the Tek screws. I've shown some options, that will make a cleaner, more durable install. Others have used this info and been happy with their installs as well.

Good luck with it.

 

Yeah if they can't put a ac kit on in a day maybe 2 i wouldn't go back to them.

 

First of all you would be better served to go to the local auto a/c shop than a Mustang shop for this work.

In every early Mustang I've ever seen there is a knock out in the firewall especially for a/c lines. You can get a rubber grommet that fits this hole perfectly and fits the low side and high side hose perfectly. I would NEVER let anyone cut ANYTHING when putting an a/c unit in one of these cars.

This part is personal preference, but I would never use of the aftermarket units in an early Mustang. You don't say what or year model you have, but if it's a 65 or 66, the original underdash units are of high quality and readily available. Use one of those, then use a parallel flow condensor and a Sanden compressor and you can make a heck of a high quality a/c that will be of higher quality than one of these specialty units and will look like it belongs in the car.

The underdash add on units were still quite common in the 67 through 70 models and would look right at home, giving you a high quality system.

My $0.02