Work!
My first set of aftermarket pipes was DG. I changed them for DMC 916's, I see a diffence but nothing dramatic like Bigboy said. If you dont have 500$ spend for T5 or others and you have a good deal for DG, take it.
I changed them for Paul Turner. Because I need more torque I ride moslty MX... But I ran 3 set of DMC's in the past ... My experience in trails has been great with thoses pipes. It's practically the same power than T5
10'' wheels are little bigger for 18'' tires. You have more chance to twist your wheels, I twisted mine on a triple...I suggest to you a set 9'' wheels with 18'' tires razr MX are pretty good.I have Holeshot MX and I love it very good traction.