Thanks, guys. I guess I'm not really looking for an aftermarket head but alternate head choices. Are there any that flow better than others? I'm a 5.0 freak but I'd love to get some extra performance out of the 2000 Sable. I don't mind porting and doing other things. Is the spark controlled solely from the EEC and not from a crank sensor? Something has to tell the EEC where the engine is. Also what is the stock fuel pump output? Couldn't you just add a fuel pressure regulator and adjust the fuel pressure up a little or does the computer want to puke on you? I'm very limited on my knowledge of the Sable/Taurus family, but I have rebuilt suspensions and minor engine repair on a '88 bull.