I got 3 gauges to install, boost, water temperature, and oil temperature. can you recommend on stock engine where to connect sensors and vacuum line to, so i can get accurate reading from.

 

Boost gauge: http://www.fd3s.net/boost_gauge_install.html
Oil temp: http://mrcmfg.com/catalog/product_in...products_id=72


Coolant temp (take your pick):

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/water-temperature-sensor-how-tap-install-247147/
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/water-temp-sender-thermostat-housing-bad-idea-392910/

 

What about oil pressure?

 

http://mrcmfg.com/catalog/product_in...products_id=72

 

Some will make fun of me for suggesting this but I used glowshift parts for my install. So far, everything has been working great. I got an oil filter pedastal and some piece that I clamp between a cut piece of hoses that has a fitting for a temp sensor. They were extremely cheap.