I i'm from Quebec (french canadian) I own a Golf tdi Alh and here's what i've done to it so far:
-Egr delete (physical and all 3 ecu map)
-Custom made (by me in stainless sch40) exhaust manifold to accomodate my Garrett GTB1756vk
-Vr6 clutch witch Corrado G60 flywheel
-Pd130 manifold intake
-bilstein hd in the rear
-koni orange in the front
-2 inch intercooler piping
-3 inch airfilter to turbo pipe
-no more muffler but still have a cat
-Replaced the 4 bearing of the shift linkage in the trany
-Ebay injector nozzle .205 5 hole
-a/c removed (dind'nt work ane way)
-For sure i've mess with the ecu and I'm pretty happy with the result, it ain't the same car AT ALL

That's pretty much it otherwise I also own a Nissan S13 hatch wich i'm restoring to ultimatly put my rb25det with my gt3076r (genuine) in it and swap for a rb26 head (got it for 200$ a real bargin) and start from here till 700hp :) (probably gonna put a Borg Warner EFR to go beyond 500hp)