Looking for local port & polish

I'm in the Mid Michigan area, around Flint and Lapeer mostly (I go back and fourth). I'm looking for a place that can port and polish my cast iron big block heads? If I remember correctly they're 906 heads, but I'd have to double check to be sure. I'm not 100% certain in my ability considering I've never done it, and I just want some quality work done. I don't have the biggest budget in the world, I'm kinda hoping to keep it under the $500-$1,000 mark, but I'd like to know cost too if possible. Just want to have a solid running engine, hoping for 450-500hp, nothing too crazy for a 440...

Any input appreciated, thanks!

~Christian