I'm sure there is someone here that has had it done but maybe not done the work themselves.
I helped a buddy do a car in the UK and with the PT being coil over shock at the front and seperate coils at the back it would be similar.
I looked at several kits and the easiest of them is probably air ride's complete replacement for the shock/spring at the front and an airspring at the back.
If you've don a bit of work on cars before and you have garage space, 2 trolly jacks and 4 stands, plus usual tools you should be fine. mage sure you clip the plastic air hose near any points where you have to take it through the body or buy plastic grommets, you don't want to wer through it and get stranded.
Also make sure the bags don't touch anything when you pancake then start to raise it up, this happened to my buddy, when flat on the ground the bags were clear but as the bag expanded a little when increasing the pressure it rubbed the shock just a little, 3 months later an a blown bag.
Your tank is going to have to go in the car unless yo can buy a Donut snaped tank that's small enough to go in the place of your spare wheel, this s a neat set up if you can fit it, but the volume of the tank may be lower than the torpedo shaped ones and this means your compressur will have to be rated for a higher duty cycle.
If you can afford it, upgrade the lines to 3/8" and buy the larger dump valves, air systems are never going to compete with hydraulics for speed but with 1/4" lines my buddy's merc was slow to lift regardless of weather the tank was up to pressure or not.
The compressors are noisy but mounting it outside the car will probably reduce it's life, I'd suggest getting some pretey soft isolation mounts and mount it in the storage bin space in the left side of the trunk (unless you have the mopar sub there ofcourse).
This will leave it in a semi accessible place if you need to get to it but will allow you to put sound deadening in also... not too much and not directly touching it, they do get quite hot if you're using the system a lot.
Finaly don't work about adding blocks, the PT has bump stops in the rear which you can cut down to allow the bags to get you as low as possible for parking, driving most of the kits are set to give you normal comfort levels at 1-2" lower than stock, if you want to ride lower it will be harsher (but look much cooler)
