They do have the cassic nitro dragsters.
http://www.rjspeed.com
As for the sct based drag cars, I would love nitro,
but it seems to be going out. The only option thst I know of is a Nitro Slash conversion.
They also have 1/5th gas 2 stroke dragsters.
I'm active on a number of NPRC social media groups, and I see
more nitro SC builds than I've
ever seen. Some of the NPRC clubs have added nitro classes (though they really should follow the RCDRL and allow .21/less nitro compete directly with 2s). I also see that whenever someone posts a new nitro build, a bunch of people chime in and say they plan, or want to build one. This is in pretty stark contrast to 2019 when I was first building my SC drag car, there were barely any, and the attitude towards nitro was
bad. There are definitely still some people out there who are vehemently anti-nitro for whatever reasons, but there's no question something has been shifting over the past year.
Heck, I recently joined the "NitroGang" group on FB, and was shocked to find that it was 1) By far the most active group I'd joined, including the very active "NoPrep Junkies" (where most everyone involved in NPRC posts, including big name racers - even Big Chief), and 2) Tons of people converting electric vehicles to nitro, lol.
The Slash is the only SC based nitro chassis, but it's widely supported, and there's tons of aftermarket parts. Extreme Racing makes a nice CF chassis for the Nitro Slash. I suppose one could convert a DR10 or Losi 22s to nitro, but with the Slash being available there's no point - these cars are all very similar in design.
As for nitro dragsters, I see a few here and there, I don't think that's hugely popular. I see people running them in some events, but the 1/5 scale gas dragsters are
way more popular.