I just googled for 8-string Precision and the results... ...it kinda hurts.
Rickenbacker made 8-strings, Gibson had some very rudely made 8-strings for TM Stevens (Uwe has one), Ibanez made 8-strings, of course my religion Warwick does. It is strange: Fender made 12-string guitars, short, medium and long scale basses, hollow bodies, fretless but I have never seen a (Custom Shop) 8-string.