If you look at the similar threads box below you will see several pumpkin beer recipes and a discussion of a pumpkin porter kit...
My Pumpkin porter thread is very detailed from recipe creation to tasting notes, even a bottle that was several months old. But it is a partygyle so the creation may be too complcated for you, but the "imaginary" recipes, the recipes based on the calculations could be brewed as individual recipes, rather that a partigyle. http://www.homebrewtalk.com/f36/lets-partyyyy-gyle-pumpkin-porter-ale-one-mash-74927/
You can also google and find quite a few recipes, like this one from beer tools library BeerTools.com Recipe Library - Ooberbrau OCD Pumpkin Porter
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Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman
I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew