Recently bought a Early Bay Westfalia with a stock 1600 twin port engine and the stock exhaust and heat exchangers are on their way out. As I'm only going to be a fair weather camper I thought I might look into an after market exhaust as the heating isn't going to be very important, has anyone got any recommendations as to what to fit? I was thinking of something like a single quiet pack and a 4 into 1 header but I'm not sure if it will fit?