Thanks Bossticle, Definitley a 996 prefix. Pic attached to the original post.

The engine block in my 1967 SIIa/SIII mish-mash is stamped with 99600840C. I've been trying to identify the engine from this number but can't find any reference to something beginning with the 996 prefix. I'd be interested if anyone could point me in the right direction. Thanks Rob

The mighty pillar drill has sorted it. Thanks for the tips.

Thanks all for the useful advice. My new project has had several uncareful owners who have botched most jobs they've attempted. It's time the old girl had a bit of love. The hubs are fitted with three different types of wheel stud. Three different studs in one hub on the rear O/S corner...

Can anyone give me a few tips for removing wheel studs that screw into the hub? Pic attached. Thanks in advance. Rob

Thanks for your replies. I'll have another go!

I'm proud new owner of my first Landy, a 1967 2a. First job has been to strip the hubs down and replace the very manky bearings. I purchased a bearing replacement kit which included a plastic inner hub seal. I installed new bearings without a problem. I'm now struggling to get the seal to fit...