I don't have an optimized MAF, I have an optimized airbox and TB. And all that really means is dremeling out all the excess garbage, rounding corners, and knife edge-ing any edges.
There is no need to go to a larger MAF unless you plan on going FI.
Modifying the MAF in any way will mess with you A/F mixture.

Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST Pre98 Zetec - Some Mods