to me it looks like the 063 is the middle ground between 086 and 053 but i guess the number could have told me that
i am going to try the rdlogics one piece pipe with a waller adapter next time i can run i hope that it has the great bottom end power of the 053 with some more top end
if it ever stops raining on the weekends here i can actually check it out i need some more practice before regionals in 2 weeks