Upgrade your 1965 Chevrolet Fullsize with our premium Engine Harness, designed specifically for 283 & 327 cubic inch engines equipped with factory gauges. This high-quality wiring harness not only simplifies installation but also enhances performance by providing a reliable connection for your GM H.E.I. distributor. Say goodbye to frayed wires and electrical issues—our Engine Harness ensures durability and optimal functionality, far surpassing generic alternatives.