I've got a factory block 347 from Ford strokers with 185 tf heads, custom comp cam, forged internals running 10.5-1 compression. I'm looking for some more power but don't want to kill the block immediately. I also live in the Bahamas with no proper dyno. So I'm wondering weather I can put the small vortech kit from latemodelrestoration or should I put a small shot of nos? I don't believe in nos really but considering it as an option. Any suggestions or info from similar builds?