i was advised not to heat wrap a stainless steal one as they are prone to cracking,heat wise i think its better now than before and it cools down realy quick,if you do get one dont use the gasket that comes with it as they are sh:t as ive just had to fit a oe one as the one they gave me it started blowing strait away as its a one piece and the oe ones are single(x4)thing you need to think about is what will it cost to get the oe manifold gas flowed compared to the 4 branch.also if you are going to get a 4 branch go for a ashley as alot of people have said that they are realy good.
