This is a long reply so sorry. I did the install on my NSX myself. I installed Infinity Perfect speakers (Aluminum drivers for Aluminum car, dumb I know, but as Harmon own both Infinity and Revel and the Revel uses aluminum drivers, well, They sound great!) For the doors, I used the original plastic cabinets. I used just the back and with the front, I used sealant and screws to mount 3/4 inch MDF. I then stuffed the cabinets with wool The holes for the drivers had been cut before putting them all together. The tweeter should be mounted close to the woofer. Be careful and patient when you put it all together in the door so the panel fits correctly. I then mounted a Soundstream Picasso amp behind the drivers seat. Heavy 4 guage wire was run from the battery through the fire wall to a common junction box as I have a second amp for the subwoofer. The subwoofer is mounted in the floor. Unfortunately, the 10 inch sub Infinity Perfect 10.1 takes too much room and I plan on using an 8 inch Morel Sub with a custom cabinet using part of the original factory cabinet. The current sub is powered by a JL Audio amp. Total cost was under $900 (bought things on EBAY) and took me about 6 hours total. I recouped almost $250 by selling my original equipment on EBAY. Email me private if I can be of further help. Still using the stock head unit but will be replacing it in the future.