I don't know if this is still for relevance for you but maybe those in the future but IIRC Hybrid Racing OR Ktuned have made a plug and play apapter for s2k cluster in other models so have made your jobs easier. Give them a checkout.
K Tuned had made an all in one converter but its certainly not plug and play. You need that module and the subsequent harness that is made by wire-worx. You still have to fabricate a way to mount a cluster and a shroud to make it aesthetically pleasing.
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