Uprated clutch

I have a defender 90 with the 300 tdi engine. She has no centre exhaust box, no cat, an Allard intercooler and no EGR valve. I have just had the injectors done, a new lift pump and the fuel pump rebuilt. The pump has been fueled up to suit the intercooler. The performance is now stunning. The only problem is that the clutch now slips in 4th and 5th up hill when on the turbo.

Any recommendations for a clutch that can take this extra power?

standard OEM 130 clutch or

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