its a waste with MFi as MFi is not enough for some 1600's let alone a 1900
It would be one of them engines that needs looking at and setting up every other week which is a pain and can cost alot of money if you have to pay for it to be checked. MFi is great if std and not molested with mods and extras.
As soon as you want more power or better drive and throttle reponse etc. EFi is needed.
If it has Accralites i can guess where it came from and what rods it has.
I would change them!