I'm thinking of upgrading to EFI for better driveability and I wanted to get suggestions and hear some real world experiences. I have a 360 cube LA motor, built from a 90's MP short block, with ported 308 heads, a Comp Cam hydraulic lifter cam, Eddy Performer intake, a Demon 725 cfm carb, 3:55 gears, and a TKO 600 5-speed, in a 1970 Dart. I'm looking at EFI because the current setup is really "cold-blooded" though it idles pretty well once it warms up.

Does anyone have a recommendation for a throttle body EFI system that is easy to install? I already have an in-tank EFI capable fuel pump and regulator. Do I need to switch to a single-plane manifold, or perhaps a carb spacer on the dual plane? Any and all input is appreciated!