2004Lovemustangs

I looking for a reputable machine shop in the Houston area to rebuild a pair of 2v Ported Cylinder Heads. My car is supercharged with forged internals. The heads are ported and bought them from someone who was parting out the car. I want to install them on my car, but not certain on how that will affect its performance. Can anyone tell me of a good machine shop and how much RWHP it will give me after installed? What cams are recommend? It is now making 410 RWHP. Also, I was wondering if just putting blower cams is better than having those heads rebuilt. If so, how much horses I'm I expecting without the ported heads? Just also wondering if having those head done are worth it. Any replies will be greatly appreciated.
Thanks,