Maf question...

[5liter87]

Well, im aware that a MAF larger than the t/b is the way to go...but what are the downfalls to a matched size? I am getting a deal through someone on a cold air kit & 75mm t/b for $220 shipped. So, im wondering if i should recalibrate the stock MAF through Pro-M for $150 and have it calibrated to 80mm or 76mm? Then, buy the 30# injectors for 220 bucks new. OR grab a deal i found on a C&l 76mm w/ 30# injectors for $365 shipped. thank you