That’s up to the owner.
What I would do. Buy the universal electronics(Gauges, SAFC, Engine Management etc)that a KA-T would use. Slap the turbo on this KA with the proper items such as intercooler…
When the KA finally gives, which may take awhile, the KA he has built on the side will drop in fully built WITH the intercooler bolting right on, electronics and so on.
BTW: That is a super minty car