Help finding parts

hey i have a 91 LS and i'm just wondering a good site to look for rims and other parts like springs and if anybody has any suggestions and could i fit 16" rims on my car

for rims i highly suggest www.tirerack.com
Yes i believe you can

Yes 16"'s will fit

Search around, there's millions of places you can go for parts.
16's will fit...i also believe 17's will...don't quote me on that.

ya www.tirerack.com is awesome cause you can soo what they lok liek on the car, but for good prices check out wheelmax.com decent rims good prices. flip tyhrough a modified mag for wheel adds, 17s fit but only with 45 profile tires, too risky for me, scared ill dent the rim with those little tires