i had two 8" subs a flat sub box, two twelve inch 3 way speakers, 4" mids with tweeters in the doors, 4" three way under the dash (in the footwells), with tweets mounted on the dash, running off a 250 watt four channel amp for the speakers and a 150 watt twin channel for the subs. the car rocked however this was in a bis and was easier to fit however the electrics were not up to the job as an example during a journey from wales to london i ran the stereo system continually on a normal car this is fine however on a 126 it resulted in no charge in my battery and no power to run the indicators or wipers when i got to central london where it was raining cats and dogs! my advice is these cars are not for the big sounds if you intend to drive in them. the other onus is they are bloody easy to break into and have the system stolen this i know from experience!!