This is from the Comp Cams belt drive instruction sheet.
5. The unit is designed for use in a paved, on-road environment. Make sure that
rocks and debris are prevented from getting into the assembly. Keep clean of dirt
and oil. It is possible to use this drive in a dirt track application, provided that a
cover is fabricated to isolate the drive from contamination by dirt and debris.
The jesel kit says is comes with a cover. Maybe thats why it cost $220 more??????
http://www.jeselonline.com/v2/index.php?categoryid=22
http://www.jegs.com/i/Jesel/549/KBD-32000/10002/-1
I hope I didn't buy more parts I have to send back!?????