Okay, just recently got the build sheet back from Dodge on what my newer truck was equipped with and one of the things noted was that it only had the 24 gallon Gas Tank. My other truck, which is a 1990 (The new one is a 1992) has a 30 gallon tank.

Would it be reasonably possible to swap the gas tanks between the two trucks?

It's reasonably possible, but probably not reasonable.

Eh, nvm, it is a 30 gallon, just got back from someone who knows his parts place and it appears that Dodge has a little trouble getting their build data right.

Lovely....