Realistic Expectations - 11 second Demon weekly driver

The 915 heads are probably worth more unported than ported. There are guys looking for 915 heads and typically they want to finish them themselves. If it was me I'd sell any iron heads I had to fund buying aluminum heads. I agree with Dwayne on this one. If you're looking for performance then go ahead and get the 240 Trick Flow heads now. You could spend $1000 or more on your 915 heads and still not be happy and then when you try to sell them you'll just get the stinkeye from the resto crowd since your heads have been ported.