It is very confusing. Basically you need to try and get your driveshaft to driveline and pinion angle within .5 degrees working angle if you can. .5-3.5 is the general specs. You need to measure you angles off your u joints with a socket and angle gauge. The lower you car gets the more difficult this becomes if you are using stock components.
For instance I am running DSE half height bushings, g bar, DSE sub, and at ride height my driveshaft is pointing down towards the rear .3 degrees. The driveline angle is 4.5 down leaving me a front u joint working angle of 4.2 degrees which is out of spec. To get to that measurment I have to run 3 degrees on downward pinion angle. So 3 degrees plus a driveshaft angle up of .3 degrees gives me 3.3. I will have to cut my tunnel to get the specs I want. The bottom line is will it vibrate? Not sure yet....if it does the tunnel will be cut.
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Todd
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