I have an 89 Si, and was wondering that since I have a significant amount of rust on my doors, would it be cheaper to find some used ones in good condition or try and fix the rust myself or take it to a bodyshop...

 

depends on how bad the rust is. see how much itll cost you to fix and how much a door would cost, compare. if its just surface rust you can just hit it with rust inhibitor if there are holes itll get expensive.

 

yeah it has some holes, and the passenger door looks like it had a gash almost put in it, and the only other rust on the car is on the back side of the rear wheel wells(common) I figure I can fix that a little easier