WICruiser I would bolt a piece of 3/8 x4 x10 on the trans mount then center and let it slide on the crossmember till you get clearance for your HEI ( I forgot that didn't have it in 67) that picture of the 47 suburban with PVC question shows the firewall/ valve cover clearance wider than palm thickness because of HEI I think. you'll have to estimate on engine weight to keep carb close to level,can help it some back at the steel plate. Welded my side mounts out of 3/16 plate framed-up hollow on side mounts, could use 55 chevy type at front but seems kinda top heavy with a torquer and it's a long span especially with aluminum in between there. 1/8 would be plenty on those mounts at the side.
