Before buying a cable I made sure of the length at full throw. That required knowing the throw. I measured the distance from arm to a known point (here, the throttle body base) at full open and full closed. The distance is 2.75 inches.

The throttle body mounts on studs inserted into the sump, forming a square 2.5" on a side, The throttle body was installed in the temp engine using the o-ring and a film of lube.