I got everything sorted out, thanks for the offer though.
I was luckily able to save about 95% of my data minus a few random files and folders + subdirectories being inaccessible on the old drive. Everything else was transferred over, and I ended up making another set of backups. I'm saving up for a third external hard drive to backups.
Updates on this mod are going to remain slow, but I do have something to show.
The boat trailer and SWAT equipment trailer have been completed and are ingame. I am still trying to make the boat trailer script work though because the terrain doesn't seem to like it.
A bunch of vehicles were also textured in.
The DNRC Tanker has also been completed.