The problem I see is when we chase 50 hp for BIG BUCKS. It just doesn't make that big a difference unless you are looking for every last drop of performance in a race setting. I went from 597 to 666 in my car for about 15k HA. It was an aluminum block and much more reliable, but I think you need 100+ to make it worth any real money spent.
For me, I couldn't use that kind of power on the street effectively anyway. I had to go on the track to really ring it out.
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Todd
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