On the subect of fuel rails, i was going to make a custom fuel rail, and being a holley distributor, i can get 12, 18, and 36 inch fuel rails for fairly cheap. Would the 18 be too small, because i feel 36 is too long. The reason i ask is because i get them cheaper than 12 a foot and dont pay shipping. It cost me about $30-33 for the 36 inch piece.