All 88 shafts are the same, or at least interchangeable. Likely causes are non-standard yokes, or perhaps more likely, raised or modified suspension, in particular if it has had extended shackles fitted without the extended front spring mount, as this will twist the diff down (operating with failed front bushes could have a similar effect, as could operation with loose U-bolts or broken centre bolt). Another possibility is excess spring deflection due to operating with failed shock absorber bushes or without shock absorbers, as these limit the front suspension travel. Broken engine mounts could also allow excessive angles. But the normal operation is not close to critical - army and 110 vehicles had no problems with this with raised suspension.
It should make no difference which way the shaft is fitted as far as angles go - the only reason for having the sliding joint forward is so that forward movement does not force water and dirt against the seal.
John
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