There is so much misinformation on driveline angles, pinion angles and trans and pinion angles compared to each other it is absolutely sickening, especially on stickshift cars try and find one of Mopars old chassi or drag race manuals on rear suspensions and follow that you are correct on wanting your pinion angle more down when sitting still, never, never run it pointed up towards the tranny unless it is a 4x4 jacked way up in the air Mopar drag engineers did a bunch of high speed filmimng on the driveshaft changes on thier old stick shift hemi powered mule test car, it is very violent and immeadititly when you pop the clutch I wa slucky enough to see one of those video, films, at one of the old drag seminars put on before Mopar went B.K. the first time. BTW, this subject has been beat to death here on the race forum, especially the pinion angle debate The big thing to keep in mind on pinion angle and driveshaft angle is at the rear U joint the pinion shft and driveshaft should never be perfectly aligned sitting still, there should be visible V, even if it is only 2 to 3 degrees difference Never a upside down V All U joints need a difference in angle for them to work correctly, the needles need to rotate due to the diffeence in rotating angles or planes