hi guys can you please tell me if 1300 heads will fit on a 1200 donk ,,,thanx

Yes they bolt on,
but you may(or may not!) need a head stud change on one or two? (cant quite remember).

You WILL need to change the mainfold though, since the 1300 one is too wide.
I cut mine and re-welded it, but yoi might like to just cut and use hose and clamps,
in which case you may need to brace the manifold with a piece of flat stick-metal.

Gunna put on some 83mm barrels too?!

got some spare ones ,there was some 1300 heads on ebay cheap and i was just thinkin if i got them shaved down they might work better ,they were dual ports as well

If dual ports then you WILL need to change the head studs.

You can just shorten the ends of the dual port mainifold where it goes into the boots.

thanx man