Right quick update; after losing interest in doing anything on it for a long time...
The original list was:
Re-tap and helicoil turbo to manifold thread
Fit new manifold at the same time
Strip Brembos down and free up a sticky piston
Fit some sort of bright light in the boot after breaking my CCFLRe-glue roof lining
Fix various LEDs insideFit puddle lights
Have centre box removedFit new rear discs
Re-cover door card inserts with same material as roof lining
Take it back to R-Tech for a map tweak
all interior LEDs are done and are a lot brighter than the others I had in there, shows how much LEDs have advanced over the years.
I've fitted new LED boot light strips which now lights up both sides of the boot as well as keeping the old light with a bright LED in there
Roof lining is being redone with dye, I've got a spare roof lining from my mate which I can do in my garage so I don't have to rush it (story of my life...) and hopefully I can source the A B and C pillar covers from the same car as my local scrapyard has now shut so no more scrapyard spares for me

I've also had to concede that my Cupra R Brembos are going to need a refurb as I've warped another set of discs

Hopefully my mate can skim them and get them true again but in the meantime I've got myself a set of 288mm discs and calipers to go on so I can sort the calipers at least. I've bought myself a complete rebuild kit consisting of 8 inner seals and 8 dust boots. I'm pretty sure the pistons are ok but I'll double check once they're out and give them and quick going over with some wet and dry and polish if needs be.
It's the usual story with 4 pots with however many pistons being lazy so an unequal pressure is being applied to the pads and also the pistons could not be retracting in as quick as the others leaving the pad generating heat when in constant contact with the disc.
While I've got them off I thought I'd swap the braided hoses over as the ones on the car at the mo are designed for the Leon and not the Golf so they are too long. HEL sell some braided hoses designed for Porsche calipers on a Mk4 Golf but they are the same fitment so I've bought some of them.

I've also had my centre box removed from the exhaust which has stopped it banging on the floor and gives it a slightly better note now
So main things to do now are to get the brakes swapped over and start on the refurb and also get the roof lining started while the warm weather is here.
Also I've now found out the map tweak isn't going to be possible due to R-Tech no longer mapping the AGU

Anyways I'll report back once I've done something else to it but don't expect any updates for a while lol