Yes.
Yes
1964
If you cut the housing down to fit the chevelle it will work but to just take and try to put it under the chevelle it's too long.
all depends on the profile of the tire.
4 inches or more
How can I put 24s on 1981 delta 98
sure can.
Chevy put one in the 1969 Chevelle.
Yes they can acually with the right lift kit you can put 24s on it .
YES it will bolt right on with no problems. You WILL need the headlight wiring harness from a '70 to accommodate the 4 headlight system though.
Bucket seats out of a pontiac sunfire from the 90's will fit in a 60's chevelle. You might need to put risers on the mounting brackets.