For that who regrettably until has a book Tony Buttler's 'Soviet Secret Projects, Fighters' .
Can offer information from journal "Planes of the world" 5.1997.
Except given brought on http://www.ctrl-c.liu.se/misc/ram/la-vrd.html, there is one interesting nuance leading constructor on airframe configuration, main ideologues of the project was not Lavochkin, but S.ALEKSEEV admirer/supporter twin booms of the scheme (a little later working on project "150", Lavochkin has deflected an offer Alekseev's in favour of traditional scheme, to account second tail for fighter "architectral exaggeration/Architectral bells and whistles" (My apologies Tophe)

Engine : S-18 /1250kg
Weights: empty kg. 2640
loaded kg. 3300
fuel/oil kg 500
Lenght,m.: 9,00
Span,m.: 9,60
Wing area,m. 15
Height,m.: 2,7
Speed max.km/h 890
Ceiling,m.: 15000
Range,km.: 140
Armament: 2x23 (120rpg)