i bought the megan mani for a cheap replacedment so i could get the stock one ported and not have down time. Its been on there for 1 1/2 years no cracks, no hood vent. ive seen cases where ams manifolds crack. its a hit or miss thing.

as far as power goes. id like to see side by side testing of just swapin a mani

 

It feels a little better I did O2 and manifold. It shoots flames a lot more. as far as the Bov I was planing on getting a forge next, then a tune everythung and then clutch time.

 

those are the worst headers....and they leak and crack so fast...good luck..