A Ford Lightning MAF is going to take a computer flash to calibrate it for the injectors (~$100 plus cost of flash). If I am going that route I am gonna get a MAF that I won't peg, like an SCT as well as a dyno tune (about $900 total or $300 for the MAF plus cost of flash). The alternative and probably the logical choice for your combo is to just get a Pro-M calibrated for the 42's (~$200 Ebay). What do you got against aftermarket MAF's?