Wish I still had my Ultradyne catalog. I don't think that's a Brookshire lobe because most of his stuff went in at 6 degrees ahead. It could be though.
Not sure you need an extra 7 degrees on the exhaust side but I see nothing wrong with that. That extra exhaust timing will help carry power past peak for sure.
I believe that is a older crane grind hence the cra at the beginning of the part number. I know It isn't an ultradyne,for one the lash is usually a bit tighter and crane seemed to like the 106 on the race stuff.
