can BB car 727 be installed in 4x4 w factory 360?

Yes, this should work - just make sure you have the right length mainshaft and correct spacer/coupling for between the tranny and input shaft on the t-case. Tranny cases are the same. I did something similar a few years ago but I had a 4WD truck tranny with a married NP203. My tranny guy used the case and guts along with the mainshaft out of a newer TF727. I married a NP205 to it.