i just put in the engine in my sig and want some heads and roller rockers.

how would these go with my mods

http://store.summitracing.com/partdetail.asp?part=31521

and will i have to modify anything to use the 1.6 rockers

 

With the cam you have I would look for a head that has 180cc intake runners. Also those have 72cc combustion chambers do you know the size of the chambers that you have on now and the compression ratio. If they are 64cc you will lower your compression significantly. I just bought a set of Pro topline iron heads summit has them in their new catalog, couldn't find them on the website. I think that the topline heads are much better than the Sportsman heads. As for the 1.6rr I think the only thing you need to be worried about is valve cover clearance.