Opel Corsa 1.7 TDL turbo upgrade

[Panathaole]

Hi

I want to ask what turbo I can use to upgrade the original from an Opel Corsa c 1.7 dtl?(I think is with 65 hp), this engine is without intercooler and run very bad...

I put tune file in ecu, and add an intercooler, now run much better but not enough, the owner is think to upgrade the turbo,.

What is the best option for turbo upgrade in that motor?

Thank you...

[tepSIJA]

hybrid turbo ? plug and play just remap and go go ... replacing turbo with different one is way more expensive.