For the 4g63t there is no wide block or narrow block, they are all narrow blocks. Trust me, I own a DSM shop. I didn't mean to say carbed, only the EFI 89+ 4g63's that are used in DSM's are narrow blocks.
That is correct to the best of my knowledge.
I had one of those things for a little while now,it pays the bills.
There is an efi 2.0 wide short deck in the late auto d50.It does not have splayed main caps.