i can do this for about $450CDN?
450 what????
any way
i dont know what you are looking for when you say sound system, but 450 kinda scares me. any "system" is gonna be a lil more thn that. but first i would replace the head unit. prolly 100 150 bucks any thing normal will work. now i have yet to get the years down yet but id replace the factory speakers, crutchfield says you have 6, 4'' in the dash 6x9 in the door and 5x7 in the back, if you just replace then with like some pioneer, and that can put you very near or a lil over your budget,
now why i say this
up grading your hu with put out better sound quality, if you have a good speaker, with bad sound you get really good bad sound, and it will also allow you to be modular about your system if you deside too.
if you replace your speakers that can do a lil more then they could in 87 lol your 6x9's may be just enuff bass for you, cause if done right that have been pretty bassy for what they are.
now for a sub, if and when:
you need to get a power wedge box or a "truck box", but if you go to any shop you can get one test fited to see i you need one custom made, custom made one arnt really the $$$ people think normally like $25 more the the one they test fitted.... but subs to look at are kicker cvt is thin, pioneer makes one that's like 3 inch thic eclipes has small subs, JL, W0 line are on the thin side too,
there all gonna run you from 150 and up for a sub in the box just one sub one box, also your need a wiring kit and amps your amp will be 250 300ish
all monies are US dollar just fyi
but if you decide to go down the sub way get back to me and we can deal with that bridge when your ready to cross
