Stock Flange Turbo Plenum Boxes.
Used to fight the reversion of the intake valve closing on turbo combos
and give more open area for flow.
Hand TIG welded and 100% Made in the USA.
Only available from

Extra thick and surfaced after welding " mounting flanges.
Stock spread intake mounting holes.

Offset 2" inlet port will clear stock fan shroud and cylinder tin.
Offered in 2" and 3" equal size plenum chambers.

You can match port or we can for you.

2" inlet to 3" plenum raw
$650 pair

2" inlet to 3" plenum polished ceramic coated
$750 pair