Can someone post a picture of an original Giant Power Head ad or brochure? I would like to see what benefits they claim to be had.
Larry you may already know this but Giant, Haibe and Super Power heads are supposedly all the same. I assume the claims from the Haibe and Simmons would be the same for the Giant. That doesn't supply your ad copy but might give you additional sources. I can CC a combustion chamber on a Gaint if that helps. I believe you have a Haibe.
They almost look like they came out of the same mold! I put a Giant on my '25, and like it, but it doesn't give me the performance I was hoping for.