So im going with a custom turbo kit, T-25, etc.. on my 97 GS eclipse

My timing belt went just before this so i got my head all redone, got ARP head studs, but im lookin at a cometic head gasket,


http://www.nipponpower.com/engine/gasket/cometic_hp.html


i got a few options..
Bore size, whats the stock bore size? 87.5mm id assume? as there other option is 88.5mm

And thickness, the options are:

.030inch
.040inch
.054inch

so any reccomendations on what i should get? anyone know what the stock thickness is?
thanks

-=Brian=-