To answer your main question, Edelbrock has made 5 AMC V-8 intakes that I know of. The Performer w/EGR, Performer w/o EGR, Performer Air-Gap,the Torker and the SP2P. The most common is the Performer (With or without EGR) and that's most likely what you have. The air gap and Torker are racing intakes meant for track and strip cars, and are easy to identify with a passing glance. The SP2P is an economy intake that's great for smaller engines like my 304, but marginable on a 360 or bigger. It has long, skinny runners that improve vacuum, fuel atomization, and intake velocity; but in engines 360ci and bigger, it starts to choke them like Bart Simpson over 3000rpm.
All of the Edelbrock intakes I've had are square bore, and I THINK that's all they make for AMCs. The Sniper EFI looks like it is also square bore, so you should be good. However, if it were mine I would still used a phenolic spacer at least 1/2" thick to insulate the throttle body from the intake.
Torker: Huge, short runners in a single plane (side by side, they don't overlap eachother). Name is misleading because it destroys low-end torque. Design is for WOT, fuel/air mixture has as little resistance and distance as possible between the butterflys and the intake valves.
https://www.summitracing.com/parts/edl- ... can-motors
Air Gap: Literally has a gap between the carb flange and the sealing flange.
https://www.summitracing.com/parts/edl- ... can-motors
SP2-P: The only Edelbrock intake I know of that has a choke stove. SP2-P is cast right in front, right behind the oil fill tube, characters are about 3/4" tall.