Should I use edelbrock or stay stock?

[Daves72'GMC]

I'm restoring my '72 GMC Sierra Grande with the origional 402BB and Would like some input from you guys that have edelbrock intakes,carbs v.s stock carbs,intake manifolds on your trucks and was wondering if I should stay stock and just buy a new quadrajet carb. or go with the edelbrock carb,intake,cam and does the engine run much better and have that much better performace with the edelbrock set upand how much more horse power would it give me over stock? Thank guys