I just bought my first Harley-hell yeah- but it just doesnt really sound like it should. Its a 1972 XLCH shovel head. does anyone have a recommendation on which drag pipes I should put on her, without losing too much performance due to lack of back pressure? I have also heard that for those of us a limitied budget the stock pipes can be modified- I think I heard they can be soaked in engine oil to get rid of the baffels-is that really possible? and would you recommend it? thanks in advance for any help or advice.