Ditto what
durdis said.
C&L and Pro-M make nice meters. I have a Pro-M Bullet 75 mm MAF calibrated for my 24#ers and I like it. All chrome too! Easy install, they just bolt right in with the stock bolts and "plugs" in using the stock stuff too! A really easy install, maybe 15 mins - tops.
Just an FYI, I'm making ~340 HP at the crank (290 HP at the wheels) and my 24's keep up just fine.
Good luck with your decision.
E