Diesel Bombers - 6.5 turbo making crazy noises

iv had a hell of a time with this truck the entire time I have owned it started out with a head gasket then electrical issues and grounding issues then it was a bitch to start and misfiring real bad and as soon as I get everything straight out on it this happens

got 10 miles down the road and all the sudden the truck started to overheat, misfire and load tons of black smoke out the exhaust and the turbo sounds like exhaust is coming through the intake side really loud

I shut the truck off towed it home and put some atf in the fuel tank and it stopped misfiring but its still hard to start and the turbo sounds crazy I took all the exhaust off in hopes of a clogged cat muffler ect. no change at all you can actually hear the turbo making what sounds like a warped exhaust manifold noise over the strait downpipe exhaust

when you hit the throttle the turbo spools up it seems like but it wont pull itself up my driveway unless its all the way to the floor

please help I don't want to sell the truck but at this point in time I cant keep putting money in to it every week.