[8FS_Bulau]

can the cockpit be installed as a stand alone for the mig-15(bis)

Freddy's MiG and Sabre cockpits are available as a separate Mod for UP and HSFX. (you need Peter D's MiG and Sabre installed)
I'm not sure if there is a link on AAA site, but you can probably find it at SAS or UltraPack sites.
SAS topic is here:
http://www.sas1946.com/main/index.php/topic,1539.0.html

If you don't have UP or HSFX, Cirx has repacked the complete Sabre, and MiG 15 and 17.