Well I finally bought an Autometer Boost Gauge off of Craigslist for $20 (pro-comp ultra-light). I had to buy the Auto Meter Boost Line 1/8th inch kit off the internet because the previous owner of the gauge just cut the boost line and threw it out. The kit comes with all the fittings I need (just the 1/8th Compression to 1/8th NPT Male is all I really needed). I went to buy the proper tap for it, and the guys at the autoparts store, Home Depot and Sears all looked at me like I had two heads. I told them what type of Tap i needed and they said they don't carry that. I found this tap on this website------>>
Snow Performance 82012 1/8" NPT Tap
Do you think it is what I am looking for, or do you think they actually sell the Tap I need at the stores I already visited? Here is the website for the Autometer boost line kit as well, if you feel like you want to look.
Auto Meter Boost Line 1/8" (10ft) with Ferrules 3223