well i finally bit the bullet and got my imco muffler installed today. i went with the 7471 stainless steel imco muffler with a 2 1/2" in and 2 2 1/4" out with 2 1/4" pipe going straight out and i am very pleased with it. total cost with muffler installed was 200. looks and sounds great. just wanted to say thanks for everyone on here posting up suggestions and comments.

 

I had the 7470 installed yesterday and I love the sound