On the Hallett website is just calls out test and tune for April 11th on the schedule.
Hallett Motor Racing Circuit
If you go too the Oklahoma SCCA website for
Northeast Oklahoma SCCA Home
They have a print out on for their April 12-13th sanctioned races, right under the annoucements. On the last page the information for Friday April 11th test and tune day, notice its for novice and pro's. So those that missed ALL the fun we had on March 26th here is a 2nd chance to take your high performance car around the track!
TulsaSky
