is the series 1 ptu from a tt import the same with a series 1 from a tt uk?

Yes

IF you are going to change your ptu for any reason I would strongly suggest upgrading to a series 2 ptu.

 

Both Series 1 and 2 ptu's can be used on any model 300zx whether NA, TT, LWB, SWB, Import, UK, USA, AUS etc etc.

ok thanks a lot guys ..is just that me and my mate we changed his engine but the engine is got 2 missfires ,the engine was ok when we take it off from another zx but after we put it is it wont start at all,we changed the ptu with other one he had ,it did start but is got 2 missfire...the injectors simse ok,don't know what is wrong...

Check all the injectors and coil packs for corrosion, then check that you are getting spark on all 6, process of elimination

tried again tonight ,on one of the pistons the connector was a bit loose ,silly cos i try it so many times but i end up bending the pins inside the connector and it worked and on the other piston i could see that the injector is a different color so is been changed before,we took the injector out and two of the gaskets inside were gonne,tomorrow we gonne change the injector and the gasket and will see if thats the problem

Have you checked the injectors are all firing befor eyou strip them out ?.

 

With the ignition on but engine not running rotate the CAS and listen for the clicks on each injector