I have a 2" OME lift on my 04 Disco and I 'm looking to replace the stock brake lines with some stainless steel ones. I just don't know if I should go with standard length lines or go for the extended lines. Looking at the existing lines the front ones looke like they are plenty long enough but the rear ones look like they could use a couple of inches. Opinions?

 

If you have plans for larger tires and a lot of fun wheeling, yes go to the extended length to be make sure you don't have an issue.
How many miles on your truck?

 

I plan on getting some 245/75 R16 BF Goodrich All Terrains here in the near future. My milage is 81200.

 

You are in a grey area, if you will be doing a lot of wheeling go longer.
At your mileage, you might also consider replacing all 6 rubber brake lines cause they all wear with time.

 

Add the extended stainless lines.