That maximizer one looks a lot like the OBX header. There are a few people on here that have gone with the OBX, and it sounds like they are satisfied with their purchase.
The price is about the same as well.
I will be going with the OBX myself next spring.
OBX Hearder- http://www.ebay.com/itm/OBX-Racing-S...0ca178&vxp=mtr