Your Ford chassis is known as the F53. There is a sub-forum for it here:
Ford Motorhome Chassis Forum - iRV2 Forums
You have a 6.8L V10. You'll need to look up the specs for 2001, but it's the 2-valve version.
What you need to know quickly:
1) Inspect the rear sway bar bushings on the differential. They tend to melt down. They get replaced by poly bushings off of ebay.
2) There is a "cheap handling fix" that involves adjustments to the front sway bar that load the sway bar more and make it a little less prone to sway.
3) If you have stability problems - two things to consider: a) Have it aligned and buy adjustable caster bushings, get the caster set to the positive end of the range. b) Consider a rear track bar.
4) The V10 is a solid motor with good reliability. It has a weakness in the head design at the spark plug and changing those plugs needs to be done with great care. At 60k my rig needed plugs. I don't know how many miles are on yours. Improper plug installation / removal can lead to plug blow-out.
5) Change the fuel filter. It requires a special tool (like automotive AC lines) that is cheap. These things take tons of gas and the fuel filters need to be changed every 20k if I recall right...