http://store.custombuiltmotors.com/engine-external/cbm-motorsports-ls1-ls2-ls6-ls7-straight-billet-water-neck-fitting-t-stat.html
This was used for barely 200 miles. needed a different angled housing for clearance issues.
Brand new these range from $55-75. Asking for $35

 

I just bought one of these and I'm curious if you were actually able to use those screws they supply. I wasn't able to becuase they were the wrong thread pitch or something. They got super tight to screw in after only like 2 threads into the block. I could easily tighten the stock bolts by finger all the way down snug before putting the wrench on.

 

pretty sure i used the bolts that came with it, i already had a different straight housing that had socket head bolts with it, but am not sure if i just reused the ones i had.

 

SOLD to bajabooie