I'm installing a Fass Lift Pump on my LB7 and I want to combine it with the Beans Sump. I couldn't find any info on what's inside the fuel tank, like slosh chambers or any kind of reinforcement. I would hate to drill the sump hole in the wrong place! For those of you that have done the sump, anything I should know about what's inside the fuel tank? Maybe a pic of the location of your sump or measurement? Thanks!