Heathbruce, I put a NAPS-Z engine (which is a similar bottom end to an L-series)in a 1200 once. You can see it in the photo section. I had to remove the "ring" of metal in the radiator
support that extends back and holds the stock radiator. I then used a single core cross flow radiator for further clearance. The engine will physically fit into the bay but you will need
to massage things to make it work. If you have an automatic unibody you are better off too since the trans tunnel is larger. Good luck, I know it can be done and it will be stupid fast
with the larger engine. Don't forget to upgrade the brakes too! Let me say that again, UPGRADE THE BRAKES TOO!!! Have a day. Tim
p.s. Glad to see that Mareo is back in action and not in traction.