Help, I would like to run this intake.

Yes, the Performer is built for the small port LA heads. Suggest the Performer RPM. It is made for the larger 340/360 intake ports. It is a little bit taller, but should not be a problem for the Ramcharger. According to the literature, the Performer works from idle to 5500 rpm, the Performer RPM is best from 1500-6500 rpm. Hope this is helpful in the decision making process.