Proform 141-638 GM Performance Bowtie wire looms for Chevy small block engines. Chrome plated with the GM Bowtie logo. Mounts to the valve cover fasteners. Fits 8mm ignition wires. Sold as 2 Bowtie wire looms. TECH NOTE: Will not fit centerbolt valve covers. Proform 141-638 GM :Performance Bowtie ignition wire looms Chevy small block 141-638 HOW TO ORDER: 1. If there is an applications box, click, then scroll the applications box to find your vehicle. 2. Click on your vehicle. 3. Click "add to cart" 4. Enter your information and submit order. 5. If there is no applications box, then just click "add to cart", then enter your information. HOURS: 11:00 am to 6:00 pm Monday - Friday Eastern Standard Time We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page. We will not ship to freight forwarding - expediting companies. PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.