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.
Yeah that is strange why they made a wideblock 2.0 for the D50, Learn something new everyday.