exhuast manifold second one that is cracked help!!!!!!!!!!!!!!!!
 

ok i have a 98 gmc seirra 4x4 i have had the truck for a year now and i have replaced the exhuast manifold on the drivers side from stock to a replacment one and now the replacment one is cracked in the same spot. any one else had this problem or is it just me need to now if it is worth going to aftermarket headers or just replace it again with stock?