You may download the SFI 2.3M Tech Advisory pdf dated 12-19-06, which is our understanding to be required by NHRA 1-1-2007. The 2.3M SFI Spec Tech Advisory pdf is our summary of this tech advisory, which outlines our instructions and kit that we have available so that you can comply to this tech advisory. The kit number is 23M07TA. You may contact Murf ( firstname.lastname@example.org ) or Theresa ( email@example.com ) for your shipment of the 23M07TA kit. Should you have any questions feel free to call us. To order a shroud, download the pdf form and mail/fax it to McKinney Corporation.