I have a 78 Swinger which did have a 65 metra until I broke off an exhaust stud and then fucked up even more by having someone try to drill it out. Anywho, my current setup is a Magnum top-end, a case matched case(for a 65 metra), 16 Sha, Bi-turbo, and 17/41 gearing. My acceleration is great, but my top-end blows. Having touched close to 50mph with the metra I was wondering if widening the transfers on the Magnum top-end would help me push past 33mph! Does that speed sound right for the setup anyway?