just wondering when u upgrade a 1200 engine 2 a a14 or a15, do u have 2 have disc brakes all round 2 get through rego because of the increased power??

no....

but always better to get hold of some disc brakes

for a well moded a14 or a15 i would say yes for a personal view get disc fronts

yea i already got discs on the front but not on the back. Also i need a new diff an was thinking was it a good idea 2 get it all as one, like a diff with disc brakes already set up. What car could i get this of that wouldnt cost me 2 much?

There is actually nothing wrong with drum brakes on the rear, particularly in street cars, & there are many who would tell you that they even have some advantages over discs for rear axle applications.

If you are running stock type Datsun 1200 discs on the front, & they were not factory fitted, then make sure that the rear wheel cylinders are the correct, smaller ones.
The discs need a higher line pressure to provide a given level of retardation. This higher pressure tends to make the rears lock up a bit too soon, so they reduced the rear wheel cylinder diameter to help balance out the braking force, front to rear.
If running the larger bore sized cylinders, the mismatch could be most noticeable in an empty ute on a wet road whith a hard brake application. Oops.

If your ute has the larger H165 diff [& it should have], then the diff from a Bluebird will fit right into your original rear axle housing. The original ute ratio was 4.1 to 1 & this is not much fun in most street cars, so the 3.9 to 1 ratio from series 1 & 2 sedans & wagons that came with a 5 speed or an Auto will help. Another option is the 3.7 to 1 diff ratio from Bluebird sedans that came with a 4 speed.
Forget the wagons that came with the 4 speed as they used a diferent diff

all u h165 ute boys can slip bluebird disc over drums straight in, and they hook straight up to everything, you just have to get the backing plate swapped onto your axles as this requires a 4 ton press and new wheel bearings ($70)

i have a pic of it in my photo album on a h190, havent done it to my 165 yet though im told it works and i cant see why it wouldnt, only thing is these puppies require minimum 14" rims

[edit] i did put vanette h190 drums on my 165 as they fit inside 13" rims and are much bigger than the 1200 rear drums

1200RC
Is the flange at the end of the 1200 ute diff, where the backing plates bolt on, dimentionally the same as the Bluebird one?
I have a second set of series one Bluebird rear discs & i believe that all of the 1200 rear backing plates, including utes, are the same as each other, & of course, the same as the 1000.

Flanges on ute diffs, Bluebird H165, vannette H165 and stanza imported are all the same size. I have custom bearing retainers I have used on ute axles and stanza axles.