So I have a Jacked Up Car

[Nazrac]

So I was really stupid and I traded my 03 6MT 350z in good Mechanical order for a 03 5AT G35 mainly cause I really needed back seats. I knew it needed some mechanical work mainly what I thought was a control arm and a Knock cable. Well I replaced the knock cable added a thermal intake gasket and a 5/16" plenum spacer but that is when I started to find the real problem. It wasn't a control arm knock it was a bad drivers side motor mount. No biggie I will just buy a set of Z1 polys so I did took it to a friend to put them in for me and he comes back saying I am not touching that car. Well come to find out that the motor or transmission was replaced probably and since they couldn't get the nuts for the compression rods out of the sub-frame well they got one off by breaking the stud they decided to cut the sub-frame all to... Well now I have a junk yard sub-frame and I haven't been able to get the one nut off that is on the passenger side compression rod and the driver side in all the infinite wisdom the previous owner had, was welded to the sub-frame. So mainly my question is can you replace the studs for arms I am hoping to finally get the passenger side off and only need to figure out the drivers side or am I up a creek without a paddle. I know this is my first post and I will get flamed for not looking the car over better, I realize I was hasty and tired. Has anyone seen anything like this before?

[telcoman]

Welcome to NICO

Sorry you are having such an issue.

I've never seen anything like that before because I learned a very long time ago that buying a used car is a crap shoot. I only buy new vehicles.
Some are lucky with a used car purchase and some end up like you getting fvucked.
From your description the repair is most likely beyond your expertise.
A qualified body shop may be able to do the necessary repairs?
If the vehicle is not drivable, join AAA with the 100mi tow option. Check with a few body shops and perhaps an Infiniti dealer for recommendations. Have the vehicle placed on a flatbed to be repaired by a pro.

Good luck

Telcoman