the V-spec in that pic is a 3 port engine
don't let the low port count put you off as these are a very good engine, very linear power delivery & will keep pulling to a good high topend
very good on fuel too, these will do the magic 10 minutes on a tank!
there is 1 problem with them tho, the rear bearing they come with aint good so either fit a ceramic or a Picco rear bearing & you're good to go
as for lifespan - variable - is probably the best word
