i did the stock tank in the back of the truck also and it was near the cab.... it work fine but it stuck up a lil far for my liking so i chopped out the bed floor under it and dropped it 2 inches....the 2" drop of the tank was as far as i could take it witht the 4 link setup(clears by 1/2 inch).... it looked good for a stock tank with all of the wires and hoses and crap hanging all over it.... great for a temp job.....
pic of it....