Hello David,
My internet connection has been really bad for a few days, and I have been trying to get a look and listen to your video. Just got to do that, and my

to you! Looks and sounds really good. Well done.
I agree with others, your truck has an excellent exhaust note now. I know it's impractical to leave as is, and thats the pity!
To a blind man, that could be a Mack Truck

........or a D9 Dozer.
Proper job, my friend. Enjoy driving it.