Trans Am Shelby 289-302 Dual quad intake Tagged: dual quad intakes This topic contains 0 replies, has 1 voice, and was last updated by Jerry Merrill 1 year, 2 months ago. Author Posts April 15, 2017 at 10:55 pm #3772 Jerry MerrillParticipant For sale 289 Shelby small block dual quad intake manifold. Hi rise Shelby lettered intake for holley carbs. Excellent condition, not milled. $675.00. Also 2nd identical intake except has been milled 30/1000. $500.00. Call Jerry 951-378-6090 Author Posts You must be logged in to reply to this topic.