Sorry for the delay.
Check out this site, they list numerous MAS sensors by application and part #.
http://rothfam.com/svo/reference/maf_part_number.html
Basically if it says F1Z on the top, it will work. This is assuming the MAS is going in a stock 5.0 HO MAF tube (55mm).
A word of caution though...
If this person does not have 19lb injectors, then all this work will be worth spit. The stock MAF/MAS will not work well with larger injectors.
Hope you find one quick,