i am wanting to but a header from LCE and i need to know if i can do away with the smog stuff on the manifold?

 

Welcome to YT...moved your thread to newbie tech from the build section.
I think your best source for this would be to contact the vender: LCE: http://www.lcengineering.com/

also when asking for information--helps to know what type of toyota you are talking about, consider adding your truck info to your signature: IE- 94 4Runner 3.0