Thanks, I just found that victorylibrary site. I'm actually trying to figure out what I have installed, its been painted and the only cast info appears to be the Edelbrock script. I think its an old torker or related as it has the front screw hole they do (I'm not sure what they are for) but the boss leading up to it is curved not straight. In any event I think a dual plane would make more sense for street use.