Virtually any MAF will work with any injector.
If you change either injectors or the MAF, you must tell the ECU the new injector size or the new transfer function (for the MAF). A transfer function is just a table that list voltage values (at points between 0 and 5V) with corresponding airflow values (in pounds of air per minute).
With injectors you obviously need them capable to flow enough fuel. With the MAF, you just need it capable of flowing an adequate mass of air before it maxes out at ~5V.
You can not change the MAF without knowing what the transfer funtion is so that you can input that data into the ECU. Also, the transfer function will tell you about where the meter will max out - ie the airflow reading at 5V.
(Actually, I guess you wouldn't have to know the transfer function as long as you knew the range was adequate, but if you didn't, it would lead to an unnecessarly large amount of time to tune it in.)
In anycase, today with ECU tuning capability the calibration is primarly an identifyer, or name, that lets you differenciate between MAFs and their different transfer functions so you know what values you should initially input into the ECU.
Physical size and fitting issues aside, as long as the range (max mass airflow before pegging out) of a MAF is adequate for your application, you should be able to use it with any injector size that is adequate for your application.
