Intake Manifold Gasket Question

[angelsairman]

I need to purchase a new set of intake manifold gaskets. Im going to get felpros but i dont know which one i would need as there are several types listed

http://www.northernautoparts.com/Pro...?ProductId=296

Im pretty sure i just need the stock ones but im not sure on the blocked or unblocked heat crossover as i have no idea what they are talking about. Orignally i purchased just a stock set of felpros when i built the engine...so any help would be apprecited...and just in case it helps my heads are stock castings with i believe 2.02/194 valves 3 angle valve job and the intake is a Edelbrock Performer EPS...