NEED HELP FOR LPFP SKODA SUPERB 3v 2.0 tsi 280 CJXA EA888.3 AWD

SKODA SUPERB 3V 2.0 TSI 280 CJXA EA888.3 DSG6 DQ250

VIN: TMBCE9NPXH7xxxxxxx

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ORIGINAL LOW PRESSURE PUMP REFERENCE: 3Q0 919 051 B / A2C91175400 / VW MQB B 4MOTION

ORIGINAL FUEL SENDING UNIT REFERENCE: 3Q0.919.673 C / A2C87349000 / VW MQB B 4MOTION

Hello, I need help installing a high-power low-pressure pump on my vehicle for a Stage 2 E85 flexfuel project. However, I'm having great difficulty finding a solution. I purchased a Bosch 0580200392 pump and a Bartek 590LH kit. assembles but as it is for type GOLF 7R the fuel gauge does not work it does not seem to be the same type because the tank is different, after several in-depth searches it seems that the VW ARTEON 280 / VW PASSAT B8 and SKODA SUPERB 3V 280 share the same platform with a specific pump and the same tank, my wiring concerning the fuel gauge is 3 pins, it seems that after several searches my car model is only compatible with a low pressure pump from Audi RS3 and that there is a plug & play wiring harness. https://scskunkwerks.com/en-gb/products/awd-mqb-rs3-pump-hardware-and-harness-kit?variant=47121984880961
https://scskunkwerks.com/en-gb/products/brushless-rs3-low-pressure-fuel-pump-upgrade-for-awd-mqb
If you know how to install it, please let me know which pump/harness I should purchase to install a high-power, low-pressure pump.
Thank you for your help.
Kind regards