I can't comment as to durability once it's all put back together, but preparation is key. I'll assume you know the information I'm about to post, but I'll put it in here for anyone else considering this. In researching this I came across quite a few disaster stories (mostly on ricer forums....), but also noticed a trend of people failing to use the products properly or sometimes to do any prep at all.
The following is what I've been doing, and so far the pieces have survived the fingernail scratching test quite well. Will it stand up to throwing tools, dogs, and/or the occasional drunken midget hookers with multiple body piercings around inside? I don't think so. But, if you are constantly throwing tools, dogs, and/or the occasional drunken midget hookers with multiple body piercings around in your old Subaru, you shouldn't really be worried about what it looks like in there anyhow.
1. Clean each piece well with TSP and Scotchbrite pads. Rinse well with water, and allow to dry.
2. Clean each piece with wax remover/degreaser (I used DC's own) [Use lint free rag, in case product mildly attacks material]. Then clean it again, just to be safe.
-----2b. Wear gloves from here on to avoid getting skin grease on part!
3. Adhesion promoter, two light coats about 2-3 minutes apart.
4. Within 2-5 minutes after last coat of adhesion promoter, start laying down color. Light coats each time and again, 2-3 minutes between.
5. ALLOW PART TO CURE FOR AS MANY DAYS AS YOU CAN.
I've been sticking with a general rule of three light coats for each piece, not including little spots or edges that I find later that could use an extra puff.
By light coat, I'm saying that my first coat is very spotty and definitely doesn't cover completely. Do not be tempted to go heavier at any stage!
The curing part, I did a hard fingernail scratch-test on a piece about 24-36 hours after the final coat and it did not lift the color, though you could faintly see where I
scratched it - but take into consideration, if you scratch any OEM piece of plastic or vinyl, you are going to leave a mark too, so......
We'll see. So far I'm impressed with my results. I'll post pics when the weather gets better here.