I hear ya 68GTconvert... I first looked around for the 69 340 HP manifolds and they were going for around $500-$900. I decided right away that I wouldn't buy those for the 318, although I would definitely consider them for the 340 once it is ready. I found this pair of 68 Dart 273-318 manifolds pretty cheap and thought for the price they would suit the 318 and my needs in the short term. Keep in mind that at this point I'm still combing through the car and finding tons of things that need my attention.