NOS unit, Never installed, as new as it gets for an "Old part". 2x4 configuration. Has "offy" sideway carb adapters, and stainless hardware. The original gasket too dry, and small to use. Gasket shrunk for such a long storage, original cardboard box decomposed a long time ago. Project plans have changed. Paid a lot as you can imagine, just want to get my infestment back. $2500.00. Serious buyers only. Photos sent upon request. Location, southern california, san fernando valley. Apologize if I set it in the wrong area, sort of lost in here.