Hooker BlackHeart 12643HKR 78-88 GM G-Body LS-Swap Engine Motor Mount Brackets. GM G-BODY, LS-SWAP ENGINE MOUNT KIT. ABOUT HOOKER BLACKHEART At the HEART of any performance vehicle is the exhaust system. For decades, many of the most powerful vehicles on the planet have used Hooker Headers. To stay in front, we introduced the Blackheart line […]