I dont have a spare tire i took it out because i have rims so it wouldnt matter any way. yea my system does take up my whole trunk if you come to redline tonight youll see, i have my amp, my yellow top and my sub, the sub takes up 90% but its 4000 WATTS .., I think i might just take the time to fiberglass it into the trunk that way i would have room for the tank. I would take out the yellow top but for the time being theres no way my alternator can put out 120watts when the max on the thing is less than that, and thats only the amp drawing 120. i got a HO alternator so ill probally put it in sometime on sunday, since tonight is redline and tomorrow is the CASINO.
