Ah, dearest Cliff.....
This is actually an engine builder's nightmare. Being limited by the customer and not his own ability. I would always rather the car be slow because of the car's setup or the driver's prowess....not by the engine.
If we hadn't went about this totally backwards, I probably would have declined....hahaha
I built a 408 inch LS engine for a guy that wanted to road race. He insisted that I use the cam that he wanted. I told him to come and get the parts as I wasn't interested. If an engine is a turd, I want it to be because of my own stupidity and not because a customer picked the wrong parts.
We ended up using my cam and in his first road race, he placed 3rd in a field of 80-some cars.
So, let's keep the "tag" off the engine for awhile. I have a feeling that you'll get really used to the car pretty soon and I don't want everyone to know that you need more horsey-power.