yeah any 71 series 5 speed will go into that bellhousing with minor adjustments

the CA and SR 71c gearboxes will be a straight fit, also rb20 boxes and rb25de. vg30e boxes might even be the same
71b boxes, which are mainly L series long boxes will go in with a different bearing at the front and some kinda sleeve on one of the shifter rods, also ca20 boxes
71a, which is the r30 stump will also go in the same as above

but it would be best to use a CA or SR box as they are alot nicer than the earlier ones

and yes r33 gearboxes can be adapted to sr bellhousings if you have a tig....never seen one that hasnt had a cut and shut bellhousing. but those boxes are huge, about twice the sixe of an sr box

b310gx, id be interested in your srdet box with no bellhousing depending on how much you want for it