Carl (Iceracer) was recommended to me he’s very good with the 250s I contacted him but he is busy at the moment and can’t take any more work so he recommended dynoport in NY to me. My top end is there now Rich Daly is the owner and he seems to know his stuff been doing it a long time. Getting porting/headwork done also crank rebuilt trans backcut and big volume pipe/silencer. Not exactly local to you but a good option. His number is 315-225-3665 located out of union springs NY.