I read what Mike said. I'm not convinced. Steve Sunshine knows these cars inside and out and is fully familiar with the Shelby block.
My understanding is that it is really a center oiler. Regardless, its clear its not the same block and does not
oil the same as the 427SO (for better or worse). As Mike notes their simialarity ends with the number of head bolts and cylinders.
There is only one REAL 427SO. The original.