would a 4x4 longbed fit?

i found this:



i dont have the money to get it but i was wondering if a longbed would fit on my truck. and is that a good deal, btw? a 4x4 longbed and fenders for $600?

It would fit, if you extend your frame like 2 feet haha. Price seems kinda high but then again it is a 4x4 longbed. Theres not many of those around.