anyone no from experience how a locked (or open wheeler) h150 holds up with a basically standard l20b (only has 32/36 webber). Its 5spd manual. Also can some of you guys tell me how much you payed to get tailshaft shortened and balanced, getting quotes atm just wondering, anyone recomend anywere in s.a? Thanks guys, any questions on the conversion just ask!

oh yea and it will be street driven so extra stress on axles with u turns car parks etc. i guess ill just run it with the locker and if axle life is too short ill put a single spinner h150 back in drive slow and grab a h165 or h190 wen funds avaliable.

Arev you putting this donk into a B310? I am fixing to do this swap too. The H150 will be okay as long as you don't give it excess shock loading launches etc. Locked diffys are a great idea for dgag racing,but a pain in the ass on the street bigtime.
I will be experimenting with a phantom grip in the future. If your vehicle is a B310, you are at a dissadvantage as they use coils rather that leaves. So there is considerably more engineering involved.

a14force its in a b110 datsun 1200 4 dr sedan, is a relitively easy and cheap conversion that when finished looks like its meant to be there cant say how well it goes yet but im guessing it should go alright. what diff are you running behind your beast?

welded diff on street equals awesome hook up but right pain in the arse

OH, okay. I asumed it must be a sunny 'cos thats where H150 come from.
I was running an H145 with a 4.1:1, out of a 1200.wagon. It seemed to cope with thw abuse okay, but I knew that isooner or later it was gonna go bang, so I pulled it out. (Plus, traction was vey diffficult to obtain in first and second)
Now it's running an H145, with a 3.9:1 head. (Welded) I only drove it once before the engine "retired", But it was a dog.
I have an h165 from a ute to go in, But am desperately seeking a 3.9: head for it.
I will be trying out the Phantom grip , when I can get my hands on a head.

sorry for being so ignorant but what is Phantom grip?
is it a mechanical LSD? or just tech talk for a MIG locker. haha

It's also known as a spring loaded locker.
Do a search and there is some info here, although I think the link to a mazda website with pics is no longer working.

There is great debate as to how well they work, but I am game to give it a go when I find a suitable diff head.