Oriellys wiper motor new 68.00

Picked up a new wiper motor for my a body. Fits b bodies. 68.00 from oriellys. Chinese. Good quality. Only issue. Bell crank shaft is 7/16 instead 3/8. You have to enlarge the rectangle opening. Used a jigsaw and bimetal blade. Vice the bell crank, insert the blade at an angle, turn it on, slowly rotate it, move it back and forth. Will make a nice snug opening.

Wish you had a pic of what the hole looked like afterwards. Would a drill do the same thing?

From the pics it looks like the motor is smaller in diameter but I am wondering if the overall length of the motor is shorter as well? The reason I ask is I am wondering if it would clear an air grabber air cleaner instead of having to convert to a 3 speed wiper motor setup.