Been a fair bit of talk on the earlier brother of the A series...the J Series, in particular the J15, as it's larger.

I've only ever heard about people 'not' putting them in their 1200s.

Good Luck if you choose to go ahead with it.

Cheers.

hey i just wont to know weather any peoplz here have put a j13 motor out of a 520 1965-1969 motor in a datsun 1200 if so can any one give me some details because i have a j13 in my garage and it just needs a new head gassket to get it runnig it blew it after 3000km so its brand new never asked how the hell that hapend anyway any help would be helpfull