if its for road reg, and engenieering will need 25mm clearance so eaier for a tunnell in that tunnel less coupe you have tomo.

dont forget some little things, like radiator, 200b speedo cable should work with the bar type speedo (pig dog remebers theres 2 different types) not sure about coupe dash.

Ive got a s13 sr20 de radiator, similar to s13 ca18 de and det radiator. outlets on right spots.

there were a couple of other things but ive got them all n the shed still.

Probably easist conversion ive heard of apart from a14/15 into a 1200