Hey Ben,
I run the vitara g16a 8v Carby engine in my Coily.
I run the 1.6 dizzy, 1.6 intake manifold and my original g13ba carby and air intake.
One thing you will run into is the g16 sits just higher so you can either body lift or simply space the bonnet up as i have done.
Check out the second page of my build thread at the bottom for some photos.
viewtopic.php?f=4&t=33311&hilit=dec&start=30Cheers