Yes Your El Camino Year can be determined from the Vin #, What is your Vin#?
no camino has a straight rear vette has independent rear
Yes
eBay has plenty. two screws holding lens in.
To change the rear right hand lens on vw Touran you need a user manual to guide and direct you.
85W90 gear oil
yes
If it's a similar vintage and bodystyle, yes
junk yard
On the driver's side at the rear of the engine.
It depends on the exact engine and transmission used.
no as the 77 isn't as wide as the 71.
No, this would not be a direct bolt in.