IMPROVE GROUND CLEARANCE 3000M

[plasticpig72]

I wondered how you can improve ground clearance on a 3000M.
I am lucky to own a 3000S and a 3000M. The 3000S i have fitted 80% tyres and the 3000M has 70 tyres. The ride height on the 3000S is a lot higher and no problem for speed bumps/sleeping policemen.
I saw what was said about a winged baffled sump which could improve ground clearance.
When i bought my 3000M the seller gave me a spare sump and said the sump on the car i sold me had a repaired sump. This was because the sump hit the ground at some time and was damaged.
Could i mod my spare sump so it's not so deep and will not be at a lower level than the Chassis cross rail?
Alan

[plasticpig72]

Just a few measurements from my 3000M fitted with 195/70 tyres.
Ground to bottom of sump 9cms, ground to bottom of chassis cross member 12.5 cms.
The bottom of the sump is 3.5 cms lower than the chassis.
When driving a 1600M on 195/70 tyres i managed to break off an anti rollbar on a speed hump here in Brittany.
I suppose i will need to buy 195/80 tyres for the 3000M as fitted to my 3000S(ground to sump 13.5 cms). Yes the 3000S has 4.5 cms more sump to gound clearance
Alan