Jayco Greyhawk XL offers the strength and capability for your wildest adventures. The Ford 4x4 F550 (F600 on 33F), and powered by a 6.7 liter Power Stroke V8 Turbo diesel engine willl turn mountains into molehills. Don't let the strong chassis fool you, though, the interior of the Greyhawk XL is pure luxury with all the amenities you are looking for. Look for the Greyhawk XL at our Tulsa and Sapulpa locations in Northeast Oklahoma.