i need to know which complete rear end assembly will fit into a sunny, with minimal modification. I of course want something stronger than a h150, it will have to handle a well worked L series with plenty of bitumen abuse. I just got a pay rise so now i can mod my engine further :D

Get yourself a H190.

Havent done it but I have known a person who did a stanza axle into a sunny, said it was a straight swap though you might have to play with the yolks. you get bigger brakes aswell.
Olboy

a japanese model h165 rear end will bolt right in,& if you get the a 1200 ute tailshaft,
it should fit with no worries.i,ve done a 63a gearbox to a h165 rear into a sunny,using a 1200 ute tailshaft with a stanza front yoke,it worked perfectly.

how strong is the h165 b310gx? Will it handle an L18 with about 150hp with a fair bit of abuse? If not, how easy is it to put a h190 in it?

it all depends on how much is a fair amount.i've used h165's behind 150 hp a15's with no problems,including static burnouts,but what could be the killer is the torque.if i was you i'd give it a go,because there's no straight bolt in h190,you'd need serious work to get one in a sunny.i've used the housing out of a c120 van,
but had to have the mounts welded on.the housing from a s12 gazelle needs the mounts
for the bottom trailing arms reworked,but this housing is wider than stock(so is the stanza but only by one inch),so different offsets are needed for the rear wheels.again,give the stanza diff a go,if it doesn't last,then you can worry about what else to do.

yeah that sounds like the go mate, Ive just found a h165 LSD out of a stanza and the engine that's in that stanza was a L20b with 87 rear wheel kilowatts used for rallying, so i think it should be alright. Im just gonna see how long the h150 will hold on for before I change it over. PS.. are the trailing arms the same?

they're the same lengths,but the stanza ones are heavier,which means stronger to me.both
sunny's i've put bigger diffs into i've used the stanza arms.

My dad ran 160hp through a h165 and I know of a couple of 2ltr sport sedan stanza that where running NA sr20's with the h165

its like any diff if you look after them and make sure they are in good condition before you put them in

run things like additives etc

and make sure the diff holds enough oil, it all helps

in a sunny you can disconect the top arms and lower the nose of the diff to make sure you get a good amount of oil in
not to much though read a stanza manual for how much

its really only abuse that kills most diffs


oh and a H190 in a sunny use's up about 60mm of suspension travel not the greatest conversion