Isky 200-AGP Small Block Chevy 5/16" Adjustable Guide Plates

Made simple to minimize modifications associated with high performance factory aftermarket aluminum or cast iron cylinder heads where intake ports have been relocated from their original factory position. Fully adjustable guide plates come with two pieces. One male and one female. There are grind centers for a closer setting. Can easily be adjusted inward and outwards. For more stability, guide plates can be welded once final adjustments have been made.