Lifted and Squeaking

I have just lifted my 4wd (suppose to be 50ml) got roughly 40 ml front and back. (suspension not a body lift) I now have a squeak every now and then sounds like like a metal type squeak definitely not a rattle. It seems to be more under very gentle acceleration around the 30/40k mark, if I back off it stops if I accelerate firmer it stops.It comes and goes Its driving me nuts. I have checked under the vehicle for the last week looking for tell tale signs but cant see any. At first I thought maybe the exhaust where it joins under near the drivers seat, sprayed with wd40 to see if it stopped, no, some one said possibly front drive shaft/uni as it would now be at a different angle ?? Would this be possible, it has coil/strut front end and coil/shocks in the rear. I have jumped up and down on the bullbar, side steps,shook the crapper out of it,rocked it, wont do it. Can drive for a week like last week no squeak, today doing it all day. I cant pinpoint whether its the front or back. Even had my neighbour sitting on bullbar driving up my street at around 30k (dangerous I know) to try and pinpoint whether its coming from the front or back,couldn't tell and its diesel so harder for him to tell from outside due to engine noise but turning the engine off and rolling it doesn't do it, needs to be under gentle throttle. I'm more concerned it might be rubbing on some thing important but cant find it. I have returned it to where the job was done but as usual wouldn't make the noise. I'm not sure whether this has any thing to do with the lift but it wasn't doing it before never had any unusual noises or squeaks........Any suggestions, possible drive shaft a good starting point ???? Thankyou