ok after looking at this thread:
http://www.4g61t.com/forum/viewtopic.php?t=8607
it shows the 2lt having much bigger ports than the 1.6, i assume this it the turbo engine. so does that mean that my na engine has the same size ports as the 2lt but the turbo engine has smaller ones? the evo manifold looks the same as the the pic of the 1.6 manifold in that first picture. so gives me another few questions. so if my 1600 turbo has the smaller ports should i try the evo manifold? also if the turbo ports are smaller would it be better to use my na head with the turbo cams and the evo 60mm tb? which would be better to run? which would give the best performance gain?