Can I get some help with this fender tag?

Seller states that it is a '70 Challenger RT SE 383

I know the E63 is 383, but what corresponds to RT SE ?

Thanks,

JS is Challenger R/T. 29, while generally a "sports roof" (i.e. fastback or Duster-type) on a Challenger it indicates the rear window plug. I don't know if either package is indicated elsewhere on the tag.

J Challenger
S R/T
29 Special Edition Package

There are decoders out there, but the above is the basics.

for me the most interesting code on the tag is the bumblebee stripe V9J (Chartreuse FJ5)
this Challenger is a real triple green car (paint, top, interior + stripe)