Well finally got the gasket for the oil pump i was waiting for.
So bottom end i fitted the balance shaft chain tensioner
Then onto the oil pump. I replaced the rotor assy and the piston and spring. Total for the bits including the 2 gaskets for the oil pick up pipes was about £45. But now i know its good for 100K miles or so. Below shows the pump with the new gasket for the upper pick up pipe.
There is no gasket for the oil pump to block which i find odd but i suppose it works. Before refitting i filled with oil and spun the rotor assy to prime it. If any of you do this please remember to put the shaft back in before you mount the oil pump and start fitting the upper sump, oops

!!!! Further priming can be done once the bottom is all buttoned up and filled with oil. You can remove the drive gear in the valley at the rear that is clamped with a bolt. Just pry up with a flat screw driver. You can then put a 9mm socket on the top of the oil pump shaft to manually spin it. Do this with no filter and you can check oil comes out of the filter mount.
Then on to the upper sump. New gasket and spotless mating surfaces and sealant where specified. Important to follow the procedure here and get the position relative to the rear of the block bang on. If out of spec here, as the tranny bolts into the upper sump with its 2 bottom bolts it can push or pull on the sump and break the seal, causing massive oil leaks. (side note the torque specs on most of the upper sump bolts is 10Nm and the inserts for the 8 main bolts is 4Nm so you need a sensitive torque wrench.)
So now it's done apart from fitting the new hydraulic tensioners (can't find my 27mm deep socket to torque them).
Here it is with the rear jack shaft cover fitted and the crank case breater and thermostat housing refitted.
Thanx for looking
PS if you need an engine it is now on ebay