Hi folks, I'm reinstalling the M21 in my 69 Camaro SS396 L34 X22 MT and I've spaced on the direction of the trans crossmember. Does the "notch" on the rectangular bolt hole opening face the front (driver side) or rear (passenger side) of the car? I suspect the rear PS but I just want to get a second opinion before I get out the rubber mallet. Thanks, Bill