It's really easy now that I've done it recently. Here are some tips from my first experience.
1) The wipers do need to be removed to get the cowl off as stated above. Just pull up on the plastic caps at the base of the wipers to expose a nut, then loosen. The caps can be hard to pry off, one side came off with just my fingers, the otherside took a screwdriver.
2) Don't bother taking the windshield washer fluid tubing apart, just undo the wipers and cowl and set them up the the windshield.
3) Use a plug wire puller, makes the job sooo much easier
4) Watch out when loosening the plugs, if I remember correctly, my plug #10 had corroded and when I loosened it, the ceramic busted leaving a bunch of gray shrapnel around the plug hole. I blew it all out with compressed air before completely removing the plug. Make sure to blow out all plug holes before removing plugs.
5) Getting to the rear most plug on the drivers side was made easier by removing the plug wire holder right above it and using a swivel joint socket holder.
6) No problem getting to the coil packs if your arms are small to medium.
7) I also used Champion RC12LYC's gapped to 0.035, they were suppose to be pre-gapped but I checked and half of them were off. Also at least half of them had electrodes that were not aligned with the ground, not sure if it's a big deal but being anal, I corrected it.
8) So far, the VIPER has been the easiest car I have ever worked on; everything seems to be in plain site!
Good luck!
OT: Seems like this thread is turning into a 98' GTS thread! Lol