yes hilux axles neck down after the spline so you need to cut enough off to get to the thicker part again
depends if your willing to change wheel offsets
all the good brakes are 5 stud anyway

and 4 stud :)

r31 diff would be pretty much the same weight as a hilux one with discs once cut down

main reason people go r31 over hilux is that with the hilux one you cant reuse the hilux axles(not long enough to cut and respline) so you need to find other axles to suit or get billet ones made up

dd
a lot of aussie built cars had aussie components due to our "local content" import laws in the 70's/80's
diffs gearboxes and brakes mostly

Thanks sssute.

SRB310, Borg Warner differentials don't have removable centers, they are salisbury type (integral housing). To swap the CRP with another housin you have to disassemble the ring from the pinion. But this makes them lighter than the other type.

R31=BW78

Which diff does the R31 have? Hitachi H190 or BW80 or what?

Well, as long as the 31 lsd will hold up I'll be happy.
Dazza, would this have to be a vl turbo rear or the like for LSD? Or do all BW take the same centres. Sorry i'm a bit of a newbie to diffs and what lines up etc..

not much difference between the two in weight
hilux stronger, heaps of ratios,drop out centre, lsd's lockers ,spools etc avail
i dont know why guys go for the r31 diff when after cutting it a ford or commodore diff is the same (except you can get a 4 pinion centre)
all you need is the r31 4 stud axles and brakes
pintara diff has smaller axles

Hilux diffs are pretty heavy aren't they, compared to the R31. Have talked to a few people who said it should not be a problem with the r31. Will be getting the centre rebuilt anyway to be sure. The car will be a streeter, not going to be driven hard all that often. Definitely not looking for 3-400kw that's for sure!