im learning more each day. a few more questions

Im am looking at a small door under the glove box side of the dash. i open it and it is full of leaves. it looks like maybe a manual vent or something. the car has air cond. what is that box with a door and are leaves in it a problem?
It is a manual vent, the leaves should be cleaned out. careful, when your driving down the road at Hwy. speed, the leaves will blind you.

next. the kick down lever on the car. do i need to adjust it. the orginal 2bl carb is gone and it has a 4bl elde. it looks kind of too long but if you open it up all the way, it appears to pull the rod/cable some. not driveable yet so don't know if it is working right. around the parking lot it don't want to shift up too much from 1st to 2nd until you get a little fast.
I'm not following to well here. FYI, it shold shift on it's won around 15 mph under a normal throttle operation. Normal driving.

next. if the interior is changed to black, the outside changed to another color, say green, are the door tops over the panels the black or the outside color.
I noticed there interior color, mostly black, but a bit of a customized look is good.

next. the headliner is a thick kind of cardboard. is that right or should it have been covered with vinyl etc. the board appears good, but has been painted and would appear like something i should glue vinyl on. the only headlines i have seen if fabric. need a lot of help on this one espceially.
No, bare painted black cardboard is correct. Remember, these were the cheap disposable cars of the area, much like the Hyundai excel of the late 80's and early 90's.
New plastic replacement headliners are available from Ledgenadry. Search the forum here for a thread or two on them.

next. what are you using to do the quarter to top filler to put a vinyl top back on. is bondo or what. i dont' think seam sealer would work. and i have not used lead in 30 years.
Toadys seam sealers are very good. You'll love'em over the 20 year old stuff you used to use. Eastwood also has a lead filler that isn't lead but designed to replace it for the correct filler for the purist.
I understand it is very good.

next. the vaccum bottle does not have any hose ran to it. the two hoses that come from the dash are hooked together. therefor the controls don't move the position etc on the inside. the car has air cond. i see a spot for two hoses, but on the back side there appears a hold where maybe a third vaccum line nipple use to be??? anyway, how many line into the vac tank and which one runs to the intake?? did it have a check valve also
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I'm not sure I can help with this one. SOrry.

next. the hood is a little stiff and the springs seem to want to spread out as you close it. is this just a lub issue or are they in trouble. its the springs/hinges that go down inside the front inner fenders. is them spreadig a normal thing
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Seems normal to me.

does the trans suppose to have a vacc line anywhere like on a gm product.
NO! The tranny works via a lever activated by a rod conected to the carb. Proper pressure must be maintained or your going to destry the tranny.