Modelling Quads Error

Reference Image 

 

Modelling is good but its triangulate not in Quads. So, because is very time taking.
 can't even to put texture. It's very tough to select each and every faces of model. 
Modelling should be in Quads.  

Same error just look to it how tough to select faces 
No Cap of Bottle 

This my Test render
Texturing is also ready because of modelling error   
I can't select the faces otherwise file should complete with post-processing.

This is Texture File is ready