340 X head advice

As stated the eddy heads don’t look stock to anyone but a novice. Would people notice? Probably. That being said there can be alternator fittment issues and hipo exhaust manifold fit issues with the eddy heads. Nothing that can’t be overcome easily, but keep them in mind. Unless you want the #’s matching thing or you are required to run that head, sell them and go aluminum. I have run 11.83 with my x heads but that is a pretty all out effort and why put that in a 50 year old casting?