How to best insure a Golf 4 R32 !?

Hello! How would you actually insure such a car/partial cascade I have calculated the costs online with my insurance: Public AutoPlus (liability + protection letter) EUR 100 million flat rate (in case of personal damage, however, max. EUR 8 million per injured person) EUR 56.76 – Regional class C2 Type class 18 – Claim-free class SF1 – 100 % partial cascade with EUR 150 SB EUR 21,78 – Regional class C4 Type class 28Total monthly fee EUR 78,54 Public AutoPlus (liability) licht+Schutzbrief) EUR 100 million flat-rate (in the case of personal injury, however, max. EUR 8 million per injured person) EUR 54.50 – Regional class C2 Type class 18 – Claims-free class SF1 – 100 % All-inclusive 150/partial cascade 150 SB EUR 142.25 – Regional class C2 Type class 28 – Claims-free class SF1 – 100 % Total monthly contribution EUR 196.75 Public AutoPlus (liability + protection letter) EUR 100 million flat-rate (in the case of personal injury, however, max. EUR 8 million per injured person) EUR 54.50 – Regional class C2 type class 18 – damage-free class SF1 – 100 %all inclusive without SB/partial cascade without SB 219,48 EUR – regional class C2 type class 28 – damage-free class SF1 – 100 % total contribution monthly 273,98 EUR