i have now recived the bearing i needed from chrisg many thanks.as a result of this i can now show you how i sorted out the coupling between engine and gearbox.:sweat:
rolls eagle 265 twin plated pull clutch ,it had an eton gearbox. i cut down through the gearbox half an inch from the face that bolts to the bell housing. this left me with the clutch shaft bellhousing and the bearing needed to suport it and a bearing housing. i then dismantaled it all.the studs that held the bellhousing to the gearbox ,i removed then tapped the bolt holes to take the studs and drilled out the thread thus reversing the the side of bolting, this will anable me to dismantle the assembly in situ in the lorry if needed. i then had the input shaft gear tempered ,i welded the depression in the gear then faced it of and machined it to fit the prop.i then replaced the gearbox bearing with a sealed bearing as there is nolonger any oil to lube it and reasembled all the parts.:-D