Quick question for anyone who can help me out.

According to some people Early MY99's acctualy have different Air Flow Sensors from Late MY 99's (And models following all have smaller ones as well)

Is this True or False?

Moving on, Can I purchase one of these smaller ones from a more recent model rex and fit it into my early MY99 without causing dramas with the ECU etc.

If anyone can help me out with that I would greatly appreciate it!!

Thanks!