I've done what you're interested in doing. 3x in my 03 WRX. I used to live in Scranton ages ago but still go back to visit family. I don't know any tuners in that area that specialize in Subaru mods. Only Minoka Subaru and they won't touch a hybrid build. For what you're asking, if you want a built engine that will last check out this machine shop for Subaru specific pricing. It won't be cheap. www.larryspower.com
Also, ask around the regional forums in NASIOC for recommended shops in ypur area. Your build (based on your assumed experience in this area) will require both a removal/reinstalling shop and a machine shop.