tecker4g63t

I am currently in the middle of rebuilding the engine in my 1986 Yamaha Radian. It used to be my dads old bike but he hydrolocked it and said I could fix it if I wanted. Well the exhaust is goint to the dogs so I thought I'd weld up a custom exhaust with a couple of Two Brothers cans from something. Doesn't really matter so long as the fit. So that's gonna open up the exhaust quite a bit and at the same time I was gonna do individual filters on the carbs to help airflow on that side too. What I was wondering is if anyone has ever done this or knows of anyone who's done this and what needs to be done about rejetting the carbs. I greatly appreciate all the help. Jason