UKPassats

This is driving me nuts. So any help would be great as could be one or all of a select things.

Would a faulty coil pack course hesitation past 2k rpm also if the revs are held after 2k it's still hesitates.
But will accelerate find once past the hesitation. It does it hot or cold and idles fine at 800 rpm.
As it drive fine upto then.
Even though it has a 2.9 throttle body and air intake on a 2.8 obd1.
I've only had the car a week and bought as a none runner only needing heater matrix fitting.
It's had
New rad
All new silicone hoses
Both new cts
New aux water pump
New Bremi coil pack and leads
Pcv delete replaced with catch can
Knock sensor
New header tank
New thermostat
New oil pressure switches
Air intake sensor
New heater matrix.

With the symptoms I don't think it's the throttle body.
Had it scanned last week and no fault codes other than front left abs sensor.

Need help as not enjoying this hesitation.

Thanks.