im guessing flanges for headers
why dont you laser cut or waterjet them? i can tell you the place i use if you want
Rapid Metal Products
4243 Holden Road
Lakeland, Florida 33811
Phone:863.701.0058
Fax: 863.648.5027
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Mechanical Engineer - Naval Surface Warfare Center PCD, Marine Corps. Counter IED Development
USF Formula and Baja racing Alumni/Consultant