That’s a real shame Dave. The Carltons and Senators are such good looking, rare cars. Which engine is in yours?
Mine has a documented transplanted sri130 cav engine ,so 130 bhp ,but as the engine is older than the car ,has a non cat test emissions test at mot time (1200ppm hydrocarbons,not 200 ppm and 3.5% Co ,not 0.3% Co

)
I’m going to collect this tomorrow and I spotted a mk3 Astra yesterday that I think was in the same colour. It looked better than the pictures 
Any tips? This won’t be my first Vauxhall, but it will be my first Omega
best of luck when you collect it

advice wise , same as any older used vauxhall
keep a close eye on all the levels (oil,trans fluid,coolant,brake fluid)
give it a good check over ,
if possible get the chassis rails and underside box sections dry and rust proofed ASAP
clean out drain holes in door bottoms,cills,arches and treat against rust
check and clean all brake lines and grease to protect them
make sure all the engine breather pipes are clean
get a steering wheel lock (as a visual deterant ),don't leave things on seats like sat navs etc .
I only got my first omega a few weeks ago ,so trying to future proof it myself too