I bought Fenton Headers for my '55 First Series 235 engine. They bolted right on with the original bolts/washers. The owner before me had the original manifold split w/ dual exhaust on it. It was 'ok', but didn't do too good on the welding. I saw on a forum here that someone used Waldrons Exhuast for their truck of same eara as mine. Here is their link
http://www.waldronexhaust.com/ I called them (1-800-503-9428) to get a quote on my truck and went ahead and purchased from them! The Fenton headers were not going to align with my existing exhuast, and by the time I pay another company to redo the existing, I decided to purchase their kit premade for my truck and save time/aggrivation later. I will add though... I had to modify my carb linkage due to the headers were in the way of the original linkage route.