In his thread (https://www.v8buick.com/index.php?threads/th350-200r4-swap-summary.176591/) Ken mentions needing to mount the rear of the trans as high as possible due to the driveshaft angle. Is that true in the early A bodies? I am looking at the energy suspension trans mounts and they offer a regular and a short mount. I'm thinking the regular (taller) mount will be needed. https://www.energysuspensionparts.com/universal_motor_mounts.asp 3.1108 vs 3.1158 Any advice?
I'm not familiar with the difference in chassis but the best thing to do would be to measure the pinion angle with whatever mount you choose to make sure it's still in spec. I don't think the trans mount height moves it a whole lot compared to something like adjustable control arms. I personally would opt for the taller one if you have tunnel clearance for it. When I did my 2004R swap (1970 Skylark) I put the trans as close to the tunnel as I could reasonably get it and then still had to use adjustable control arms to get the pinion angle right, but that was also compounded by lowering the car 2" in the rear. Hopefully someone with your year car can chime in!
