Aluminum Driveshaft question

[COBESGT]

Ok, so I've done some searching thru the forums and haven't quite found the answer that I'm looking for. Here is my question:

I want to get an Aluminum Driveshaft but not sure what can be done with a lowered car (Eibach Pro-Kit). I see several driveshafts can be ordered with a Pinion Flange but I'm not sure of the reason behind them. Do they help to offset a car that has been lowered and the pinion angle isn't the same as stock? If I order the other type without the pinion flange, do I need to get an adjustable UCA? Which type is better and what type makes the most economical sense? I guess I could just call some of these places and ask them the questions, but I figured someone out here knows what I'm asking.

Speaking about an adjustable UCA, how do you know when you have one installed with the proper adjustment/angle? Should the driveshaft angle be the same as the pinion angle or rear diff angle?

Any answers or suggestions are always appreciated.

 

[walter]

I think (limited understanding of subject) that you would need to check and adjust your pinion if your car is lowered more then a 1 inch. At that point it makes no difference whether you got a DS with an adapter or with a pinion for them and for that you need adjustable control arms in the rear.

Now according to some, the shafts that offer the replacement pinion are less likely to vibrate or be off especially if the car is lowered then those that have a simple adapter plate to make them work.

 

[Casey4s]

You need to correct your suspension first. If you lowered your car you need an adjustable panhard bar and an adjustable UCA. I also had to add caster camber plates on mine which is down 1.5".

My aluminum shaft is a Spydershaft, which replaces the pinion flange and does not vibrate at high speed.