Hood Clearance Question

I have a question about hood options for my 69 Dart. My Dart currently has the original/stock GT hood installed. I am wondering if a GTS hood offers more underhood clearance than a stock (flat) GT hood? It is already tight under my hood with the 1/2" phenolic spacer installed and I may have to install the 1". I also have the black Mopar air cleaner which does not allow me to use a drop base (I don't believe). I would appreciate any insight.