i need PLANS 4 a roaster from a 275 oil tank

my fiance's business is in oil removal and he ends up with dozens of spare 275gallon oil tanks. we've been talking about turning one into a whole pig roaster! but we need some plans! like step by step plans cause i'm gonna be doing most of the cutting and welding for the damn thing! anyone know where i can find those kind of plans on the internet? or does anyone have or know where i can find some VERY DETAILED photos? any help would be greatly appreciated!

Welcome to Roadfood!
Here's some on site threads from the past that may help:
http://www.roadfood.com/Forums/topic.asp?TOPIC_ID=9939
http://www.roadfood.com/Forums/topic.asp?TOPIC_ID=2720
http://www.roadfood.com/Forums/topic.asp?TOPIC_ID=351
http://www.roadfood.com/Forums/topic.asp?TOPIC_ID=9150

You may also find some info in the forums here: http://www.barbecuenews.com/