You won't get any more performance from another MAF. A stock engine won't come close to pegging the factory sensor, and until you do, it's just a waste of money. On top of that, you'll have to get a chip burned if the transfer function is different than the factory transfer function (which is almost certain).
Look into the basics for increasing performance before attempting to modify a very well-balanced control system, i.e. higher-flowing cylinder heads, intake manifold, and exhaust system.