Check the third comment on this thread...
4x114 is the stud pattern 4 being the number of holes and 114 being the PCD.
For a mk2 mr2 your looking for wheels with a PCD of 5x114.5 the other numbers you should be concerned with is width and the ET.
The width will be 7j, 8j, 9J etc. This is just the width of the wheel.
The ET is the measurement of how where your bolt holes are in relation to the centre line of the wheel. zero offset is when it is perfectly centred, negative offset is when it is closer to the brakes and positive offset is when it is closer to the outer side of the wheel.
Shameless plug, I'm selling some nice split rims atm...
Any more questions just ask.