[oldford2]

On our 46.....Find an expert pipe bender in your area. remove the crossover and block the passenger side crossover entry. Then come off the front of the driver's side manifold and then back around the steering box and down thru the hole in the frame to head back. Just remember to clear the clutch pedal when depressed. Breathing is not a problem on a stock 46 but duals will improve some. Don't waste $$ on headers because they won't help performance and some require "fitting". Steel headers will result in more noise in the cabin. Talk to your pipe guy about pipe sizes and then call Brockman and they will make to order. Inlet size, outlet size, length and glass or steel pack. JMO
John