I recently picked up a Deutz 8006. Had been sitting a while and seems pretty worn but runs good. It puts out quite a bit of smoke, however. I am relatively new to Deutz and old tractors in general, but I really like the design of this one. Its kind of fun to work on. I changed the oil, the air cooling area was full of crap, air filter bad and a lot of crap in the intake. I pulled the fuel tank and am getting it lined. I am wondering if anyone here has experience and if itd be worth it to do a partial rebuild while I have it apart. Id also like to replace the muffler with a straight pipe, it has a cracked weld and I suspect it is very dirty as well. It also is not tall enough to keep fumes out of your face. If anyone can suggest a good place to buy air filters and/or straight pipe exhaust, Id appreciate it.