so whats the deal with this 103 proma style exhaust on 77

anyone have it? i know it'll never be the proma but has anyone had any success with it on a stockish setup?

right now my plan is:

4 petal intake from 77 OR 2 petal polini intake

15.15 sha

considering dremeling out the exhaust lip on the stock cylinder + MAYBE looking into that whole 3rd transfer thing.

this is for my city every-day bike so i need something reliable with a bit of power.

advice appreciated dudes.

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