The Lancia Kappa was available in 2L 20V non turbo and turbo but there would not be too many of these in Ireland. It would be more likely he is using the Fiat coupe 20V engine which is probably the same but more common.

Yip likely to be the same engine that was used in the fiat coupe and they also used it in the stilo and marea. The lancia lybra used it too. Would not have thought it was a candidate for a lot of tuning- unless you go for the turbo version