[Excaliber]

Chuck, just applying 'logic' to this situation.

Location of the drain back holes on a real FE has never been an issue or pointed out as a cause of rear main seal leakage. Nor have I heard to date of any modifications required to an after market pan to address such a leak.

Therefore I would have to conclude the location on the Shelby block is NOT the same as the original FE blocks. However, original FE rear main seal leakage in general HAS been something of a problem over the years. If it is not installed with great care, it WILL leak! But heck thats true of most motors.

The fact that the Shelby isn't a side oiler is neither here nor there to me. Genesis, Dove, Shelby or who ever, there all 'replicas'.

I thought Dove makes a iron block side oiler with a C5AE engine number cast into the block, just like back in the day? That may be the 'most accurate' of all the after market blocks. But I'm not sure it comes in alloy with the numbers cast into the block.