Had a reply from Bibby on the Clangers forum:
Re: TPR Juggy needs car audio advice
Postby Bibby » Wed Dec 07, 2011 2:36 am
Hello. 
This could be a massive reply but I’ll try and keep it succinct.
Install is everything! Seats out, carpet up, doorcards off, bootliner out, roofliner too if you want to go daft, then a good clean and lay down some sound deadening material. If you can’t afford the expense, just do the front doors.
With everything out, now is the time to get your cables routed. Conventionally, power from alternator through to the boot, earth in the boot for your amps (short as possible), speaker cable either side of the car to your comps up front, rca cables down the middle with your remote cable from head to amp. Again, plenty info online will elaborate. Don’t skip getting your “big 3” sorted, so new heavy gauge cable from alt positive to battery positive, engine earth to chassis and battery earth to chassis.
The kit, million ways to skin a cat, it’s up to you. Again, guides online with all the detail:
Amps in the boot can be anything as basic as fitting in a birch ply base (or mdf) and mounting to that, either to back of the rear seats or to the floor, or going crazy with a big fibreglass build. False floor is a good compromise, hides all the cables underneath with the amps on show, or you could even have another floor with the amps hidden from view and just have an access panel.
Subs, I’m guessing a sealed enclosure here, very simple to make yourself or buy. Big fan of a fourth order myself, but it’ll take up a lot more room and takes time to get right, but lots of fun!
Comps up front, a router is your friend for making decent baffles. You must spend time getting the comps in right or it’ll just sound bonk. Spend time aiming them before install (lay them on an old t-shirt or something, bamboo cane works well as a visual guide with aiming), and fix them in solid. Fibreglass builds in the footwell are easy, as is a doorcard build, but you have to get them in secure. I had 4 x 6.5" comps in each front door in one install, was sweet! Lovely midbass…
Anyway, the fun is in the installation. If you’re like I was, as soon as you’d finish one install you’d be thinking of the next, I don’t think I ever went 3 months before starting another when I was still installing.
In a nutshell: Kit is a contributor, but the not as important as the install.
Been a member of this forum since 2003, more info than you can shake a stick at. Start with the tutorials, everything you’ll need is in there. Talk Audio - Information … tutorials/
Keep it simple, stick to the basics, take your time. Have fun! 
hth
althought i’m not sure the ladybird red and black spotted carpet did help with the sound :rotate:
