can i up grade my fuel tank to a a larger capacity? on 1998 Chevrolet S10

just wondering if i can go from a 18.5 gal to a 20 gal or larger fuel tank and how to do it

Asked by for the 1998 Chevrolet S10
1998 Chevy. S 10 what else can you tell us about this vehicle? Like body type!
1 more answer , 1 more comment
its only 1.5 gals more. why?
Woundering if I can