Mosk's gauge pod looks very cool and since there are few or no others around like it, sounds like a viable alternative.
However, you should also consider the factory instrument cluster. You can swap in a factory tach cluster with little hassle, since your truck is prewired for it.
Just a couple of things to consider:
You'll need to replace you idiot light oil pressure sending unit with a gauge sending unit. You can order from Toyota for about $50 or better yet, get the one that came from the same truck as the cluster, as there are two different part numbers floating out there.
Do not turn on the ignition with the new cluster in, until the new gauge sending unit is hooked up. Not the idiot light sender, or it will fry the oil pressure gauge.
Try to get a cluster that came from the same engine as yours so the tach will match up.
Engine temp, volt meter, tach, and fuel gauge should all work as normal. The low fuel warning light on the new cluster will probably not work as these lights require a 4 wire fuel sender, and yours is probably the standard 2 wire.
Around 1992/1993 and later clusters had electronic speedos. Earlier clusters had cable speedos. Make sure you get the cluster that matches your set up.
Keep in the mind, the Toyota oil pressure gauge is little more than a glorified idiot light. It does move back and forth as oil pressure increases and decreases, but the amount will actually vary depending on the truck, when made, and age of gauge/sending unit. There's a reason why there are no numbers that gauge. The only thing it's really good for is to tell you that if the needle is past zero, you have oil pressure, if not, either you don't or the wire fell off the sending unit.
What I did was put a little idiot light in place of the oil pressure gauge and use the stock idiot light sending unit in the second oil pressure port, to the right of the stock oil pressure port. Then I use the stock oil pressure port for my VDO oil pressure gauge sending unit for my aftermarket VDO gauge, which sits on my dash.
Here's a picture to give you a general idea. The custom oil pressure light is just to the left of the tach.