so thought I would update the thread, got the car back!
driven about 200 KM so far both on the open road and in traffic and overall I am pretty happy with it.
On a smooth flat and empty motorway last night I got up to 175 Kph then part of the rubber around the windscreen got loose so slowed down. Definitely more to go.
It does not feel torquey like a turbo car but very free revving and faster and way more responsive than before.
Also fine in traffic, clutch is not heavy and no overheating.
Thanks for all the help and advise from the BM's here
I have a UK trip next month, when I am back as expenses allow I will be doing more mods, next I would like some semi-bucket seats, a brake upgrade (maybe using Skyline R32 4pot calipers), a short shift kit, maybe an EVO steering rack.
cheers