Your swap is into an 85?
The bracket you have circled is an "88 only" bracket. Since the shelf on the cradle is in a different position on the 88, you may have some trouble getting things to line up.
You may consider the L-shaped bracket that was used on the 85-87 V6.
Note that if you use the 88 bracket, there is a boss missing from the side of the block that one of the bolt holes would line up with. It's the one nearest the oil filter.
Edit - The engine I was thinking of, with the missing boss, was the iron head 3.4. If that's a 3400 in the pic above, the block could be different.
So, please carry on. Just don't be surprised...
[This message has been edited by Raydar (edited 07-24-2023).]