you will want to run the 5/16 size clamps for stock size hose. Also if you plan on doing the stainless line and bypassing the stock hardlines on top of the plenum, you will want to purchase some type of hose tie down/clamp to keep the stainless line from hitting the plenum. This will keep it from scratching your plenum all up.
"Speed costs money. How fast can you afford to go". -DarkZide