Pushrod length: you have to measure the lenght when you install the new heads then order. I have not had the luck of having the same length pushrods when i installed new heads. I have used valve lash caps, or new pushrods. but if your getting your orginal heads redone they should be very close. depends how much if any they are planed.
Correct me if i'm wrong guys.

 

So if I don't need the 1.6rr, are you saying just reuse my stock 1.5 rockers? In other words... Order the LE1 head w/ springs and stainless valves, also his billet cam similar to cc306, and reuse my lifters/pushrods/rockers.

 

No, I would go with the nsa 1.6rr w/ hardened pushrods and guide plates. Replace your lifters with ls7 lifters for higher rpm's. And after you get your heads and cam installed, you will have to measure your pushrod length with a pushrod length checking tool which was previously mentioned by another member. You may or may not have to change your pushrod length but either way ur gonna need new ones that are hardened because of the nsa rockers.

 

The only breaking in a roller cam needs is your foot on the floor
They do not require break in.