Well this has been entertaining at least?
I've always had whatever I was working on tweaked as good as possible, whether stock or with some coin in it. I don't doubt your results, but for how long? With many details missing, it sounds like you have a decent working car with a stockish shortblock, good heads, and the juice. I'm picking up a "childish" theme here, like look what I did. I know it can be addicting to push a stock shortblock further and further, but at some point, it will go boom!
I'd hate to see a block destruct on you, even at 70mph, much less 125. Just be safe and keep that car,......and you, in one piece.