I recently bought a ‘64 GTO with the M20 four speed, and when I let the clutch out - at whatever rpm - I get serious shuttering. The whole car shakes. Once she’s in gear and cruising it’s fine. What could be the cause? The guy who sold it to me said he just put in a new clutch. Could he have...

Hi Everyone. I'm looking at purchasing a good quality M-20 for my 1966 GTO, but have two questions that are a bit above my pay grade: -Does anyone know of any issues with bolting up a '64 M-20 to a '66? -What's the best approach for purchasing linkage and a shifter? Purchase for a '64? or...