1969 Race Dart w/ 426 Hemi- garaged for 45+ years

I'm wondering if the factory cross ram is an indication that it's an original Race Hemi in there.
I tried to get the numbers on the block but it is covered too much by the header. The flat pad on the front seems to be smooth. I can't make out anything and even used a piece of sandpaper to see if any numbers would come up. We will know soon enough..........motor is coming out Monday.