The heads are the 60925 for HR cam with dual springs. The springs comp recommended were the 953. They are discontinued. They were 473 spring rate. The new improved springs are 26953 @500 spring rate installed at 1.95. I think what they mean by improved is having one spring work on more applications. LOL
I originally assumed a solid roller would have lighter springs due to less parts in the lifter. Yep. I was wrong on that.
The locks I ordered are machined 10 degrees. The +.050 locks seem odd to me. I assume they have been proven.