Vauxhall Antara power loss

Hi,
Latter part of last year noticed when pulling away loss of power from 1000 to 1500 rpm on reaching 2000 rpm she was off like a shot.
On taking the MOT it failed on binding handbrake osr so thought this might be the problem. Replaced rear shoes and pads passed retest with advisory about bearing osr.
July i fitted new bearings and noticed a leak from the fuel filter housing which had to be replaced.
During removal of parts to get at the fuel filter housing discovered the turbo to be leaking oil. removed the unit - the vanes on the air side were damaged and on further investigation the shaft was distorted so had to replaced the core.
Once all reassembled to the engine and primed with new oil and filter i started the engine, abs light remained with the oil can and spanner, skid risk and engine management light remained on but it ran sweet as a nut.
Pulled off the drive went to pull away she shuddered and stalled, restarted revved it wheel screeched and pulled away, on reaching 1500 rpm she took off but stalled at the next junction when dropped below 1500rpm.
I don't know what to do now!
Any ideas would be appreciated ? I hope you don't say it's the clutch!
Regards Steve.