The 4AFC (Carb) Have Air Cleaner On Top And 4AFE(EFi) 1st Gen Usually Looks Like This
The 2nd Gen 5A/4A/7AFE Looks Like This
3rd Gen 5A/4A/7A Have DIff Manifold Design And Is Bit Aggressive Than 2nd Gen Looks like This....Also Comes With DLI
Keep In Mind That Beside Being Looking Same Alike...There Are Many 4AFE VAriants AVailable ..Always Make Sure You Have Matching STuff Along With Engine....