So can a 737:

http://www.b737.org.uk/unpavedstripkit.htm

The 737 was originally designed for short, unpaved runways, which would bring jet service to many otherwise inaccessible airports.

Sure, the older 737s. That's why most of the 737-200s still in service are up in Canada. The high bypass engines on the NGs and newer are too big to easily fit gravel kits on.