totally green to truck & 5th wheel - looking for advice

[sandito]

We have just sold our motor home because we have decided to go with a truck and 5th wheel (better suits our travelling needs). We plan to purchase an older 19 or 20 ft 5th wheel. We are looking (on line, various sites) at several trucks, ranging from 2002 to 2006 - Chev Silverado, Nissan Frontier, GMC Sierra....would these be big enough/able to easily handle a 20 ft 5th wheel? Any pros/cons on these vehicles? Any recommendations?

Any info much appreciated!