Originally Posted by 
PLR
				 
			G`day , 
as i said i don`t know what the story with it is i have only conversed with 3 of the last 5 owners and only via Email .
Each one including the current side stepped questions and wouldn`t get into specifics .
It has a book full of work and receipts that has been done on it in the UK and here , it had new air springs , compressor  and valve block fitted in the UK as well as a new head , the 3rd or 4th owner fitted   coil springs  as it is now .
The M51 being mechanical electric injection seems to be a good thing and i could only find 1 thing apart from the usual things that will stop anything and that was in the injector pump there is a potentiometer that could fail but it is a unit that can be replaced , probably not on the side of the road  .
There is a fix for the hot start thing .
Coarse you won`t find a lot of M51s here and the heavy bits from OS would be expensive , though surprisingly things like radiators which are unique to them can be found new here .
They are 2.5 ltrs and there`s talk of being under powered  but the M57 is just under 3 lts and people say it is under powered , well the 1 we have when it`s climbing a tarred hill and the car your passing decides  it should stay if front and the RR kicks back a gear and the turbo get to spinning , you`d have trouble convincing me it was under powered .
The physical bolting in of the M57 would probably be not all that awkward , don`t know what mounts the M51 uses but the M57 ones are not run of the mill and the wires would be a major job or expense if a loom was bought and a L322 with a M57  would be a better way to go i would think as the arse is certainly falling for them but i`ve never driven a P38a M51  .
For the right money i would still have this one but  somethings not right and it spent time in UK winters before coming here so it may be rust that is the thing not talked about , in some of the pics it could be seen that it has done some salt time .