I have the AEM Brute force and it is a sweet set up!!! The MAC intake is also similar. I heard from a 4X4 shop here in town that it they were both good quality intakes, but the AEM set up a little better and it had mounts for the radiator hose and a better support for the tube so it didn't rest on the heat shield. But if you are wanting to save a little $ the MAC will be a decent set up.
But I will tell you one thing rpmoutlet.com isn't the best place to get stuff from. I purchased my pullies from them and I was sent pullies for a 89 thru 91 Mercury cougar. When I called tem and informed the of the wrong shipment they said they would told me they would make a note and send the right ones and a shipment sticker to return the pullies. Well after about 10 phone calls and each time no one knew what I was talking about I finally got a manager to actually send me the pullies a month later.
Total pain in the ass!!!! go with some one else with a better customer service like performanceproducts.com
2003 Silverado 1500 LT
5.3L, Ex cab, Dark Gray Metalic
Nelson Performance tune (which is bad ass)
ASP Underdrive Pullys
AEM Brute Force intake
Bosh Platinum 4 + plugs
Future Mods:
Electric fans, Headers, and possibly some NOS