I installed them for the second time just last week. I'd had them in an 
earlier van and I just loved 'em.

I suggest the onboard air compressor if you are going to fill them together. 
The original poster mentioned he fills his bags seperately. I see the logic 
but its not what I did.

The onboard compressor provides a gauge for under the dash and on the fly 
adjustment if you add a heavy load or something of that nature.

I'm a bit of a neat freak, perfectionist so it took me a few hours to 
install. 

Coupe