Tips for Fuzion if your looking into it.

1. this block isnt very restrictive at all. nothing like the storm.
you may find your flow rates go alot higher.
for me personally, its always hard to bleed air, from a high flow loop.

2. people seem to complain the block is loud...
it is... if you have air in your loop.
this block almost forces you to bleed every single last bubble anywhere, out of your loop. even a minor little bubble in your radiator or something will make the block "noisy".
take the time to bleed every single air pocket out of your system. everywhere.
theres no leway with this block.

once its completly air tight, and any air you may have is somewhere like at the top of your res... then it gets to be a nice quiet block.

it took me about a hour, of letting the air bleed from my loop, at low speed on my pump to get all the air out of it.
this block almost forces you to have a near perfect loop, if you want complete silence. even alittle bubble somewhere, will make it noisy.