Looking for headers that will fit a Blue Print Engines 572 tall deck in a stock 70 Chevelle chassis. Has a TH400 trans, stock steering shaft, etc. Would prefer coated, although stainless is not a deal breaker. The biggest criteria is time constraint. I am under the gun to get his project done! Does any company keep these in stock? Cost is secondary, for a change. Would also not like to butcher the wheel wells, so inside the frame they would have to go.