I would (and did go with Pro, fuel, boost, and wideband.) My wideband is on the column and the others are on the pillar. There are other choices. You can get a new dash cover allowing for three gauges there, the over head on posted and there is another made by autometer that puts the gauges between the overhead console and rear view mirror...I'll do some searching about the cluster. There is a write up about the steps required to mount a standard gauge in the cluster....

 

whoo, hoo. I found it, this search engine requires some clever thinking, and I'm not to clever.....BUT. READ THIS.

https://www.performancetrucks.net/fo...hlight=holesaw

 

looks pretty striaght forward besides the fact that the 03+ clucters don't have a circle hole for the tans temp. its round all the way beside the part by the tac. thanks for finding that.

 

You can easily have 6 guages of readings in your pillar mount. I purchased a rotary switch from Mag-Hytec and mounted it in the pillar next to one of the guages. If you are using electrics it's easy. I bought an oil temp guage and I have it hooked up to read oil temp, trans temp, water temp and transfer case temp. That leaves the two other guages open. Just find the guages that read the same types of things and split them up with the rotary switch.

 

here is a question for everyone. my tahoe has the hydro boost brake system. so, it does not have a the big vacuum line coming off the back of the manifold. there is (i would guess) a plug in it. so could i pull it out and put fiiting on it and make my own little boost/vacuum mainfold for the gauge,wastegate, and bov? if so what size fitting would fit in there?