Noob question Eddy Heads - special roller ockers?

Looks like I cant change the mistake on my Post title sorry for the typo - special roller rockers...

Ok. I am in the middle of gathering some pieces and parts I know I wanted. I was able to score a set of eddy heads for a 340 stroker build I am hoping to do (no real racing, MAYBE some autocross mostly cruising), yes I know overkill. I would like to have roller rockers and was dreaming / drooling over a set of Harland Sharp rockers but then I saw they have a "Special Set" just for Edelbrock Heads.

Without calling anyone, or talking to any vendors, I wondered if the A-bodies Forum crew might shed some unbiased light on what the heck are they talking about... Thanks in advance for any insight.
HS makes different versions of their rockers for different heads in an attempt to get better geometry for that particular head. Now, how well they shape up is a point of contention but if you decide to go with Harlands, you should use the set made for your specific heads.