gearbox swaps
 

Does anyone know if any later gear boxes will fit an S12 turbo? eg S13 box etc?

Yes an S13 box will fit but you will need to cut the trans tunnel hole further back and the stick sits about 2" back. Is yours a MkI or MKII? If its a MKI then you can use a MKII box

as Northener says, s13 box is 50mm longer and gearlever sits 65mm further back, may need the propshaft shortening or a different prop on a nissan.

What about your cossie set up(box, diff)? Some pics? Compatible with CA motor series?;)

my car?:confused: mine runs a cossie diff, but nissan s14 gearbox with s13 bellhousing

mk1 or mk2
 

sorry for sounding dumb, but what is the difference between mk1 and mk2. I have not owned this car for long and am starting my learning curve!
my car is a 1985 B reg turbo.!

Do a search mate, this questions been answered many times:)