[Clois Harlan]

A scoop will not solve your problem. I am wondering if you are not running a little to lean and possibly have to much advance in your distributor. Then of course these little cars have a problem with air in the system. Once you have your car started have you tried to bleed excess air from your intake where your water temp probe is installed in the manifold?

Heat could also be caused by a bad head gasket or some other sealing issue. What is the bore of your engine (how much over did you go)?

Clois