Porsche 914, 911 and other guage question

[super vw]

Alrighty...My goal for my 74 super is to transform it into a German looker built to auto cross, at the moment its all stock other than Porsche 911 seats, 16" porsche Fuchs (not mounted), and a porsche 3 spoke wheel. all the wiring is messed up (though the engine runs) and im planing on updating the whole harness with a Watsons streetworks harness for VW's. I think i might go with a turbo aswell. for the interior i wanted to go for some more modern guages and was plaing on getting a VW innovations fiberglass dash to stick them in. I will NEED a tach, speedo and fuel guages for sure, and would like to also have a oil(or head) temp guage and a boost guage if i do go with a turbo. so my Question is, Porsche 911, 914 or other guages? i would like to have some 911 guages but i was thinking 914 due to it being a 4 cyl and the fact that i might be able to get some from a guy down the raod, he has a few 914's in his back yard that are not running so maybe i can grab a set off him. Also what would i be looking at paying for a set of 914 or 911 guages? and how do i make them work? i know i should at least get a set to see how they hook up but its worth a try to ask here

Thanks!
Any opinions are welcome!
-Jonathan