Optimal angle for half shafts? Options

[technicalninja]

Is there an optimal angle for Porsche half shafts?

I'm contemplating installing a drive package that will utilize a Boxster 6 speed and wondered what is considered "optimal".

I know 20 degrees is sort of the working limit but wondered what the minimum should be.

I believe having the half shaft perfectly level and at 90 degrees to the drive wheel will tend to wear the joints at a single point.

What should I shoot for?

[Chris914n6]

The RH SBC spacer block puts the 914 trans back 1.25" and down 3/4".

I used the blocks to move my 914 trans / Nissan VQ30 engine forward 1.25" and down 1.5". The Nissan VQ35 upgrade will require me to move the trans back to stock, to fit the Variable Cam stuff sticking out the front. Then the maybe Subaru trans swap will move the diff forward 1.25".

It doesn't matter as long as the cv angle is within limits from a 360* perspective.