by maintaining the stock hu and stock speakers on 4 doors, bazooka tube sub is the best addon option for budget setup??? i was quoted 1.6k for the sub and installation... is it expensive?

without any further details, id say yes.

I would expect gold plated basket at that price.

id use the 1.6k to add a cheap 4ch amp and change all 4 oem speakers to coaxials.

unless what u are looking for is to add bass to the oem system, then better off getting an active subm the kind u can put under the seat, cost about 500-800, balance can change front speakers...

how much roughly would it cost for a bazooka tube in the market?

a lot i would say... based on price : performance ratio...

still got in the market ka? havent seen any for years.....a good box made from 3/4" wood still performs better than thin plastic tubes..

does this bazooka tubes available still? where? any recomendation? thanks.