noj30 would be best, they suck for drifting but lock up for launching of the line
im guessing thats wat ud want for autocross
yesJ30s are garbage for anything other than daily. And welded is terrible for anything other than drifting. If you want something for autocross go 1.5 it will work best
Yes you can drift on the 1.5 but if you are going to drift more than autocross go 2way if you are going to autocross more go 1.5