LS1 Manifold
Aircraft grade billet aluminum
48 IDA Weber footprint (works with TWM, Roush, Dynatek, or Weber)
Balancing tube allows access to engine vacuum
O-ring gaskets plus mounting hardware included.

$1,350 unpolished, $1,550 polished

Big Block Chevy
Welded Weber manifold with ports for a Big Chief Head
Vacuum Box underneath manifold. 

Price upon request