Transplanting a late model EFI engine into a classic musclecar can be simple or brutally difficult, depending on whether you’re doing something that’s been done quite a bit, or breaking new ground with your engine/chassis pairing. One common factor in every swap, though, is the fact that you’re almost certainly going to have to fab up an intake system for yourself.

Sure, you could hack up whatever factory airbox and plumbing you happened to find and get things working, more or less, but if you’re going to all the trouble of doing the swap in the first place, you probably want to do it all the right way.

Airaid’s U-Build-It line of kits and components let you assemble a cold-air-style intake for your EFI engine in 3-, 3.5-, 4-, 5-, or even 6-inch diameter, limited only by your imagination. The basic kit comes with a selection of straight and angled tubes, couplers, reducers, hump hoses, and of course a high-flow washable air filter. You can also get components a la carte to custom-build exactly what you need.

This year at SEMA we got a look at some new additions to the line that are essential for any EFI intake – Airaid’s MAF adapters. Available in 3-, 3.5-, and 4-inch sizes, the adapters can be ordered up with Hitachi or Denso MAF mounts, which cover the majority of OEM EFI applications, or with a blank plate that can be machined for your custom application.

Speaking of custom, Airaid also offers Cold Air Dam components for 1967-69 F-body and 1968-72 A-body General Motors cars that keep the filter element isolated from engine bay heat while drawing in cool outside air. Used in conjunction with the UBI system, they’re a trick solution to keeping your swapped classic breathing easy.