It goes really good ( more power in low rev) and have a great sound!
And you have an original look
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And a draw explain inside. You cut and take off inside. Its easy pussing with something for inside side after cut. The tap is easy doit with aluminum in a leathe machine. To fix, 2 screw in part of weel so you can not see for outside.
Easy and good result, isn´t it? :


