Experimental Russian jet

When I was a kid (appox 1957) I got a model of a Russian Jet. I ran many
searches on the net but can't find anything on it.
I don't remember the designation, but I think it was a Yak. Yes I ran 4 Yak
sites that came up.

The Jet had a nose like the F-86D, swept wings with a high sweeping tail.
The tail was very long compared to the rest of the A/C
It swept back and up in a nice curve. I've never seen another A/C with a
tail like it.
Single engine, single seater with a couple of cannon, I think were 37MM.
I think it might have been Experimental because I can't find anything out
about it..
Any Help would be welcomed...
Frank