the engine is a 78 ,,freshly rebuilt by my local engine builder. Once I set the pan in place it needs to move to the front about .100 to install the bolts. The forward and backward movement of the pan is stopped by the back of the rear bearing cap and the front of the front cap. When I look at the original truck pan the rear of the pan width(the curved part that seats against the pan gasket) it is .100 shorter than the cheap pan I bought. (hope that makes sense.) I am almost tempted to whip out my die grinder and simply elongate the holes.
in short I need .100 more movement front to back,, both pans look identical,,,even the stamping marks, maybe I need to spend more for a quality pan.
Also since this pan is a little shallower I noticed that lowest part of the connecting rods will come within 1/8 or so of the bottom of the pan when rotating,,,does that bother anyone,,,