[Walt Fricke]

Bob

You can pick up a CIS fairly cheaply, and convert it to Megasquirt or one of the low buck DIY electronic fuel injection systems. That can be made to give you better fuel economy and still use your cams.

However, you are correct - the CIS heads have grooves up at the port to accept the low mounted injectors. For EFI you'd be using different injectors, not as long, but I think you would still find that you are getting shrouding from the port wall.

It would be a bold man who decided to install these grooves in the heads while they were still on the motor (or even still in the car). You might be better off finding a set of 2.7 heads for this purpose, should you decide to go that far.

Lots of enthusiastic home brew EFI guys out there to mentor you.