Seen Skyline engines in...

Skylines of all ages
200SXs of all ages.
ZX's of all ages (240 right up to new 350)
Cefiros
Supras
Nissan Patrols
My Chaser
Focus
Laurels

Loads of others, but CBA thinking.

SR20 in Skyline conversion is gayest ever.

2JZ conversion is a better idea anyhow.