The exhaust brake is a great step forward and will work well, but where is the muffler? You won't believe how load that 250 is without a muffler, I know from sad experience on my original 925 4x4 conversion I did 3 years ago. Now I need to design a new exhaust system with a muffler, no chance of putting the crooked factory one back on. I think I will do an exhaust brake like yours while I am at it. Thank you. JT