You should be ok with a sun strip mate but what I would recommend is speak to the tint place the could cut a piece for to see what you think.
as for TPMS yes how-to is here http://www.vxoc.org.uk/forum/Thread-Howto-Retrofit-TPMS
I don't like the location of the front indercator and Baz did them first when he sold his GTC I bought them off him.
The head unit was £900 and the fascia kit was £200 then I had it painted as I wanted it to match my trim.
as for TPMS yes how-to is here http://www.vxoc.org.uk/forum/Thread-Howto-Retrofit-TPMS
I don't like the location of the front indercator and Baz did them first when he sold his GTC I bought them off him.
The head unit was £900 and the fascia kit was £200 then I had it painted as I wanted it to match my trim.
Astra-J 2.0 CDTI S/S
Retrofitted AFL, TPMS, Navi950, BT, DAB, Rear Camera, Infinity sound system, Towbar, Flexfloor & more.
I can do programming and retrofits using genuine GM MDI and Dealer software.