Hello Yan
What about a oil sump from a Corvette? it is 1 inch shallower and this should help. Here is a picture of my sump after the first test drive (see the scrabe in the mittle)
And this was under test drive with only 70% throttle. I think i will upgrade to 26-28 mm torsion bars but i first have to look what i have in the car now. Have a nice day