Wondering if anyone had any discussion about using 1.52 or 1.6 pro mag roller rockers. Is there any additional work to be done with the 1.6's? I know the stock valve covers will need to be modified for either. The engine has stock internals with simple bolt ons.

 

Nothing more for the rockers, themselves. However I would not install 1.6s using stock springs.

 

You can use stock valve covers with 1.52's.

 

Ditto that. 1.6 rockers and stock springs are a big no-no.

 

You can use the stock valve covers with the 1.6's.