Planning on duals dumped at rear end and worried about fuel lines being so close should I worry about it or is it not really a big deal? Pics would help also

 

Well any y-pipe you use crosses the fuel lines, so I would imagine it would be the same with true duals.
I wouldn't worry about it too much unless it was touching. You could always wrap some heat shielding around the lines by the pipes.

 

nah ur setup will way further from the fuel lines than the old y pipe crap

 

I just wrapped stuff in that heat tape you can buy at the parts store, just in case. Eh its cheap insurance.

 

The duals will get pretty close in spots but I just bought some heat tape and wrapped the lines for peace of mind.