My 2000 R9 plain top came with Dunlop 6105 frets (tall/narrow). I didn't much care for the frets, so a $300 refret was in the cards. New bone nut was $75. I also had the rounded fingerboard inlays replaced with period correct inlays w/ sharp corners.
18 years down the road this is one of my favorite Les Pauls. Love the big round neck profile. It fits my hand like a glove.
My Y2K R9 had tall and thin fretwire. It looked taller than normal. I eventually did an HM package D (Braz brd) and had 6105 frets installed. They feel great. I do not find them narrow. Here is a fret size link for reference.
www.warmoth.com/Guitar/Necks/FretSizePop.aspx
The 6100s are huge (like on my Charvel). My Y2K R9 was no where near that size. It felt like extra tall and on the narrow side.
The fretwire used during the time period of discussion (99, Y2K) was not as large as dunlop 6100s. Hardly close.
In fact, it was narrower and taller than even the jescar 45100 frets of more recent times.
That puts it out of range for a true dunlop 6100 size.
This is corroborated by the guitar in this very thread; the Y2K les paul guitar in the 3rd post has stock frets (most likely because of the binding nibs), and even at a cursory glance those are hardly a sliver of what Dunlop 6100s are.
You can tell 6100 frets from a mile away (figuratively speaking of course).
I have a stock 99 & 00. I toured and played the 00 enough to need refretting. The closest wire was 6100. They bothh look and feel more similar than not. The Unburst I replaced the 6105 wire with 6100s feels and looks like the 99. I haven't seen any tall narrow frets like 6105s on any I've checked out. My lefty pal Bob's '00 BB54 has according to hin 6100s and he only uses 6100 frets. I do not know how early in the year his was made, I bought my '00 first week of May 2000 and suspect it was built in April.
Greenburst claims, if I read his post right, that stock frets NARROWER AND TALLER than the 6105 wire! I find this impossible to believe.
My 2000 definitely had wire that was slightly taller and narrower than what they use now. But it was not 6105, which I don't like at all and are too "speed bump"-ish. From memory, if I had to guess the dimension... 90 (or maybe 95) x 50
I have seen large variances in asking prices for R9s (in excellent condition) in the 1999-2001 time frame. What is a fair price ?