Assume it's still full of assembly lube? Could unplug the CAS when it's in the car and full of oil and just let it crank over for 5 or 10 seconds to get it in, usually what I do if I haven't driven a car for a few of months.
Thanks for the replies, I ended up removing the oil pressure sensor and making up and adaptor. To this I conected a 1 litre steel container filled with oil and an air line hose in the bottom, and in the lid I connected another air line and reg and ran 5psi of air, this forced the oil through engine. When I went to start the engine I pulled out the fuel pump relay and only had to crank for 20 to 30 secs and oil pressure came up on the master gauge I fitted in where I had primed it. Replaced fuel pump relay and engine fired up.