Timing chain cover for a 318????

Hello friends!
As always sorry for my english....

A friend have a plymouth Barracuda from 1968, he bought the car totally disarmed, too the engine, he have not the timing chain cover, he ios searching for buy but he do not know wich is the correct, the casting number for engine is: 2536030 318-7 and the VIN : BH23F8B279635

Which is the correct cover? all years?

Thanks!!!!

TATO
Spain!
Barracuda 1967 soon finished!!!!