Mk1b has rear speakers(3.5") mounted on the B pillar

(to the left of the passengers head and to the right of the crivers head) Not much good IMHO.

MK1a didn't have them.

I disconnected mine and made up 2 bass/sub boxes

( 5.5" speakers) that sit on the floor behind the seats, with a small amp to power them under the passengers seat.

You lose a bit of rear travel on the seats but not much and

I can still sit my T-bars on top of the speakers.

Made a major difference to the sound quality with a reasonable amount of bass.

Have a look in my garage for picture
http://www.imoc.co.uk/forums/garage.php ... 1&MID=3140
hth

Jimi