Originally Posted by NorthStyle

If you're looking for the best intakes to go with the EPS TBs, then you would want the Admin Tuning 3" intakes. The EPS TBs opening are 3.25" so regardless of which intake you choose, there's going to be a difference in size.

I can't compare the Z1 vs Synolimit ported manifolds, as I had mine ported by Synergy. However, I had the billet adapter that was provided with the EPS TBs port-matched to the opening of the intake manifolds; might be something you'd be interested in depending on who you have do your porting.