I want to get one and install it where the facotry aux guages go - I'll probably get another guage since there are 2 holes in that piece.

That aside, what is the most effective and cheapest way to do it? Where do i get teh parts?

And, with some mechanical knowledge, can I do it?

 

A website like http://www.summitracing.com sells them for a decent price. They're fairly straightforward to install, you just might have to get a little creative about your pressure tap connection.

 

I purshased my Autometer gauges from Summit Racing, along with gauge pods. The fit nicely on both sides of the Tach. The cost was under $150.

As for installation, there are many threads with detail instructions.

 

the usual guages are Autometer Ultralite 2-1/16" white face. You can get the boost gauge in mechanical or electronic. Main difference is the electronic one has a peak retention function (and costs abour $190 compared to the cheaper mecanical unit.)
For a stock car, the 15psi max is perfect, as you si;ll see 11-12psi max. If you have the pulley mod, get the 30psi gauge, since you might get as much as 18-19psi. (Only problem with the 30 psi gauge and the stock pulley is you won't be reading very high on the range.)

I changed my 15psi gauge toa 30 (both electronic) when I changed to a modded pulley and still have the 15 if you want it, pm me.