Carnegie Porter Clone?

[gratus fermentatio]

Does anybody have a Carnegie Porter clone recipe they'd care to share? This is some truly AWESOME porter:
http://www.beeradvocate.com/beer/profile/10897/755/

I'd like to clone it & after a batch or 2, take it a step further & add a bit of juniper and/or spruce. Any help would be appreciated.
Regards, GF.

 

[Hujo]

75% pilsner malt
12,5% caramel malt
12,5% chocolate malt

Bitter to maybe 30 IBUs at beginning of boil with any classic european hop.

It's fermented with a pretty clean lager yeast, but before 1993 they used Ringwood.