New insurance groups

Some companies are now using 50 instead of 20 groups.
Old groupings

16v---------group 17
16vturbo--group 18
20v---------group 17
20vturbo--group 19
20vt le-----group 20
20vt plus--group 20

New groups

16v--------33
16vt-------35
20v--------33
20vt-------37
20vt le----39
20vt plus-40