Offset for 88-98 OBS with 4/6

 I am about to order some coys c5's in a 20x8.5 What Backspacing would be the best 5.2" or 5.5" or 5.75"??? The truck May one day be bagged but that wont be for many many many years if at all. If some one could let me know Thanks.  The truck a 99 classic witha 4/6 on it.

WHat no one has any info for me ???

Did you talk to Coys about the offset? They are pretty good about knowing what fits. Id try them and see what they say.

Thanks man i ordered them in a 5.5" bs itll tuck its about a +19mm offset