no i don't have FI on any current Opels
i used to have it on my street car "back in the day"
i have a few 75 setups and 2.0 setup (got the 2.0 from Gil)
there was no difference in 1/4 times between the 2.0 a the 1.9
they both have the same size TB (throttle body)
They 2.0 would be better if your going to increase the displacement of the motor.
the 2.0 L-jet has a bigger AFM so there is less of a restriction there and the throttle cable setup is easier to adapt then the 1.9, it also uses a different dual relay
there is a group buy on Megasquirt going on so you might want to look into that if you want to get into FI
but its not for the faint of heart
if you want you could send me some PICS i can tell you if its 75 FI
hth
Davegt27