[kaneerarchery]

My 1966 GMC started as a 3 speed on the column truck with an inline 6. I found a 4 speed out of a 1966 that I would like to use. How much of a job is changing to a large hump setup if i do not have the portion of the large hump that is a part of the firewall. I could fabricate the part of the floorboard to raise the hump without much of an issue, but I do not know how much additional clearance is needed at the firewall. I plan to stitch weld the new panel in place.

Randy Kaneer