Compression ratio

Thanks everybody for the input. The pistons are not stock, but when he purchased them he insisted on forged pistons. Said they were stronger than stock. I know they bored it .030 over, and decked the block and also bore aligned it. I don't know the numbers on the deck or the bore alignment. I thought he was doing a good job. As for the stock manifolds, I already ran into that problem. I have a header flange to fit that side. I had contacted Edelbrock about this issue, but they couldn't offer a solution other than recommending headers. I already have the HP manifolds, and prefer to use them. This is being mated to an 833, and 8.75 rear diff with 3.91's and anti-spin.
How does that sound to you experts?
3.91's are about the max for street fun machines with no overdrive. Limited freeway use is best with this gear. Unless you can tolerate high revs on highway.