Thanks. I might talk to Repco about it.
Sorry I should've said I've got an oval port A14, which is apparently different to the A12.

repco sell boss kits for the 120y. the part number is 434. i also got told a just jap that you can use a S13 boss kit on a 120y but dont hold me to that, it just what i was told.
i also have an A12 intake manifold if your interested but im in sydney

Email These Guys fora boss kit - they come up on ebay all the time, but most times you have to search for Nissan Boss rather than Datsun.

Cheers, TC

I'm looking for a boss kit for my 120Y.
ALso my inlet manifold is cracked and I've been looking for a replacement for ages and theres nothing around.
Right now I want either a performancey carbie & manifold I can just bolt on and run or a standard ovalport inlet manifold. I just want to get my car on the road again so anything that works is good.
I'm on the Sunshine Coast in QLD but I'd be willing to pay postage.