Gas Tank/sump - will it pass tech?

I welded a Competition Engineering sump in my gas tank. The tech inspector at my local track told me it needs to be inside the frame. He let me race (street legal drags) and a couple guys in line around me told me my setup was ok after he left. I looked up the rule and it says the fuel tank should "be within the confines of the frame and/or steel body."

I'm driving the car 250 miles to MATSLV in April and I don't want to drive it over 500 miles and not be able to race. I'm going to enter stick class and maybe footbrake. What do you think? Am I ok or do have to take it out and put in a fuel cell? The sump has 7.5 inches of clearance. Thanks for your opinions.