114ps or 131ps?

[Gippa]

:DHi everyone,well i finally managed it, at last i am the proud owner of a 53 PLATE MG ZT-T !!!

Just need a bit help though, how can i tell what ps the output is?
if i go on an insurance site and enter the reg no. it comes up on some as 114 ps and 131 ps on others.obviously i need help here guys as my local rover parts supplier couldnt help.

many thanks:D

[hawk]

open drivers door and look on b pillar should be a sticker telling u what model and what power. if it says 116ps and you ve brought a 135ps look for the xpower sticker in the same spot. thx