mlb200180

Hopin I could get some help. Im kind of new to fords...worked on chevys mostly when I was younger. I look up most of my info online. Im trying to identify the distributor on my truck. Its got a MC 2100 carb on it and the distributors got a module on the side of it and no vacuum advance canister. Im thinking about putting a DurasparkII distributor w/HEI module conversion in it but I was wondering if this distributor was originaly used with EFI. If so am I going to need to change the dist gear if it is a roller cam or is that just an issue with the 5.0 HO motors. I dont think the carb is original either. The engine
code is G so I believe it is originally a 2bl 351W engine but the carb looks like its for an older application. It's got 1.23 marked on the side so it should be ok for a 351W. Electric choke not manual or hot air. No choke pull off or dashpot or idle solenoid.