I have 12" of lift

 

do you know of a web site that i can enter my VIN and it will tell me all the parts my truck has and what other truck parts are compatible with mine.

 

You can go to www.dodge.com and click on the "for owners" link. Email them your VIN# and request a build sheet. They will send you a list of about everything your truck came with.
You need access to a Mitchell interchange manual for a complete listing of what fits from what.

 

Nice, thanks

 

Well i spent about 3 hours on the net and was not able to find any tanks larger than 26 gallon if any one has any new ideas on how to get ahold of a 34 gallon i would be greatfull thanks.

 

Auto Salvage yard is your only other choice. Unless you find one in your town that was wrecked recently..