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i have a 95 base.  it has a 3.1 which i have never turned a bolt on other than oil and plug changes. i have done away with the catalytic converter.(kinda had to) any suggestions would be greatly appreciated.

What do you want to do?  Performance?  Audio?  Video?  Apperance?

Performance and audio.

For performance, people generally start by getting the engine breathing better.  A typical first modification is a drop-in air filter such as the K&N Filtercharger.  The next step up is a warm air intake, which usually involves replacing the stock airbox with a cone filter which draws air from the engine bay.  You can also get a filter with a heat shield and run a tube to draw cool air from outside.  The best option without going all-out custom is a Tranzgenic cold air intake, which actually places the filter in an area where it can draw cool air.

The next upgrade is usually exhaust, but there are so many options that I'll just let you read opinions in the Exhaust section.

As far as handling, an upgrade to 16-inch wheels will do a LOT for you.  You can also upgrade your swaybars, get lowering springs, upgrade your struts/shocks, etc.

Lots of options for braking, too, with the simplest being better pads/shoes.  More and more people are replacing their rear drum brakes with disc brakes, but that's a more advanced project.

Hope that gets you started....other people here will know more about audio

for audio, any deck fits.  6x9's in the rear, you remove the rear seat and the rear tray to get to them.  4X6's in front, I would recomend top mounting 5.25" speakers by cutting holes in the kick panels or running a good crossover on 4" or 4x6's.  Since the trunk is enclosed 6x9's produce fairly decent bass.  

Just post up questions you have

and if want a unique subwoofer spot try a "butt kicker" i only think i've ever seen one in a car.  Put it under the passengers seat and let them literally feel the bass it's frickin hilarous when you get some unsuspecting person in there for the first time