Good morning board. I am new to this board but not to motorcycling. I am planning on purchasing an 07 Ultra an considering a few mods before i take it home. I am hopping to tap the wisdom from this board. I am looking to improve the air cleaner and exhaust flow at a min. The exhaust note improvement over the stock is a desire without sounding like a semi. The larger question is whether to jump to the 103 top end conversion. Any pearls of wisdom?