The coils on the 95 Regal were still perfect at 217k miles. However, if you absolutely feel that you 100% need a new set of coil packs,. I have two complete sets that I would sell you for cheap so you would have plenty of spares, and with the correct spark labels on them as well (not like it matters).
Coils aren't a preventative maintenance thing. Transmission fluid changes, oil changes, and replacing of gaskets that are known to be problematic are preventative maintenance. Coils however often last 300k+ miles unless something wrong happens.
If you want me to send you a set of coils, I'd be more than happy to sell them to you for what I got them for at the junkyard, since I no longer need N/A 3800 coils.
2005 Pontiac Bonneville GXP - For Sale ----- 1995 Buick Regal GS(X) - L67 madness
2000 Buick Regal GSE - Stock...for now
----- 1987 Jaguar XJ-* V12 - 12>8