Help with cobra subframes in astra

[Polski]

Right so ordered tailored made ones from demon tweeks they arrived and well they look **** i could have made them but achwell already here so beaswell use them

Its basically 2 bits of metal with some holes in them, Im guessin they bolt on underneath the seat then use the astra subframe on the bottom of that?

I had calibra leather in the front of mine so just whipped the subframe off and it dosnt fit, Are calibra/astra subframes differant?

[Nemesis]

Which Astra?

[specks]

mk3

My astra gsi project