not sure if "long bed" was noted on the tail gate this year. but then you'd know if it was lol. Q still stands.
so here's the dimensions on fourth gen pu/hilux platforms.
"Length
Regular Cab Short Bed: 4,435 mm (174.6 in)
Regular Cab Long Bed: 4,729 mm (186.2 in)
Xtracab Long Bed: 4,966 mm (195.5 in)
Xtracab SR5: 4,676 mm (184.1 in)
Reg. Cab 4WD: 4,729 mm (186.2 in)"
if you want to know more 'bout your toy, plug your VIN# into here,
http://www.decodethis.com/
en.wikipedia.org