Why not both? Here's my current setup:

 

Think I'm just going to go for the single pod and gauge behind the steering wheel esctuning.com has a great deal/package on it only 70 bucks. But is it hard to install the ones in the ac vent?(wiring wise)

Thanks for the reply also!

 

I've never done a steering wheel pod but the vent mount i did was very easy. Toughest part was fitting my fat ****** sausage fingers in there to grab the vac line i pushed through the fire wall lol

 

Lol and I got short ones : / if I do get more gauges I'll have to do the vent! It looks slick at least I think :P just got a really good deal for the single pod and gauge on esctuning.com

 

+ everything you need to hook it up and the T which people were saying is a pain in the *** to find the right size