I'm going to buy a timing light soon and I was just gonna buy a regular $50-60 one. But know i need a rpm guage, because i sent my TB out to maxbore.com to get it bored out and when i put it back on I'm going to need some kind of rpm gauage so that i can properly set my rpm. So then i saw a Timing light that has a digital rpm display on it. So my question is does anyone have one of these timing lights with the rpm reader on it? And is it acurate? I don't wanna go off my rpm gauage in my dash becasue I have reverse glow gauges on there and its not accurate. If they are garbage does anyone now where I can get a VERY CHEAP rpm gauage (like under $50) just for testing purposes???