Hey, I know pictures would be useful but I cant get any right now, I am possibly rebuilding my frame, and I was wondering what part it is that runs under the driver seat to the springs?
Thanks if anyone can tell what im talking about

 

... No clue.

The entire "unibody" is what the springs are mounted it. LCA are also mounted there. There really isn't a technical term for the different portions of the unibody. Front, middle, rear.

Why are you 'rebuilding' it?

 

It's called a frame rail.

 

Im repairing it because I cant find a good one near me that is standard, and the ones I do find get sold the day before I go to get it and its my first car and I promised I would fix it, the person I made the promise to said to buy a new one, but it may be easier this way.

 

gather pics man..

let us help ya..

for your first car replacing the psuedo frame rails and taking on that much may be an overchallenge

as a desclaimer im all for people learning how to work on their own vehicles specially these old dogs, but that is an undertaking for a (assumtion here) beginner.

borrow someones camera phone and lets see pics man.

 

Unfortunately, this is probably true, unless the OP is experienced with a welder.