cpu - 32 bit, 4 way multiplexer

I'm relatively new to electronics and recently decided to design and build a very simple CPU as a personal project. My instruction size is 32 bits and I want to have 32 bit registers so I am going to need several 32 bit wide, 4 way multiplexers.

I know how to construct one using 32 1 bit, 4 way multiplexers but I'm wondering if there is a better way to do this?

EDIT:

Essentially this:

How to create an n-bit multiplexer

but in terms of actual hardware.

Answer

One way to achieve what you want is use dense tri-state buffers, such as:

http://www.ti.com/lit/ds/sces422/sces422.pdf

You will need one (2 to 4) decoder to decode address and drive enable controls for 4 32-bit buffers. Exactly one buffer will be enabled at any given time.

Here is one example image: