Thanks Al, Ive read that Dulchich article, BUT the title "X head buildup" and the content dont match lol. They port a smog 360 head with 051 casting.
They refer LOTS to the X heads they have but are left on the shelf and not worked on in that article unfortunately.
Here is a very cool link to the DC porting templates. Of course some LA heads are NOT included including the X...:BangHead:
Ill give that video a watch Al.:thumbsup: https://www.bigblockmopar.nl/wp-content/uploads/2016/03/MoparPortingTemplates-RB_LA_Magnum.pdf