https://www.theretrofitsource.com/morimoto-retroquik-porsche-993.html?preselect=50326%2C51448
Select RHD (very important) and the splitters, these are just wiring to flip the shutter up when on main beam or flash.
I would not recommend their own HiDs, ballast, relays etc. Just use Tore B's HiDs and all will fit in the headlight pod. Early 993s have a different lid on the pod and do not have the lugs to take the Hid ballast but it's not a major problem as you can buy the lids seperately or use double sided tape ( 3M)
They also provide a more secure bulb holder (Motoholder) but I couldn't find it perhaps they now come as standard. You will not need anything other than a decent main bulb as the Morimoto main function is totally adequate and fitting an led main is a bit fiddly and overkill imho (Although I did)
It's not cheap but the results are brilliant.
There is a UK supplier of morimotos
https://emtuning.co.uk/product/bi-xenon-morimoto-mini-h1-7-0/ but you'd have to make your own adapters and wiring kit.