I have bought the Holley G-body swap pan, g-body swap motor mounts, and the transmission crossmember to do my 5.3/4l80E swap in my 84 ss el camino. Has anyone used any different manifolds or ls swap headers with the Holley parts and if so, what did you use? I don't really want to buy the Holley exhaust parts, but if I have to, I will. Just seeing what everyone has used with the Holley parts.