I have a 99 lariat 4x4 ext.cab. Form my vin. It says it is 138.8? It this correct.. It seems rather long. I have a short box. 6-6.5. My 2 rear doors open with the fronts open and it's a bench rear seat.. Maybe it's me but 138.8 seem long?

 

Look at the door jam.there. should be a stick that tells you you wb that's what it should look like

 

If in doubt grab a tape measure and measure the distance between axles 138 is not that long my 2011 scab is 145 with a 6 1/2 box

 

Sorry I couldn't figure out how to put a picture in a private message. But that's my truck. Keep in mind this is the only side pic of my.truck and it loaded with 1200 pounds of sand

 

Nice truck... Thanks

 

Thanks..... No problem