Torsion bar question 6 vs V8??

Hello
I have a question for folks that have more mopar knowledge than me.

I am upgrading my 225 to a 318/360 haven't decided and I have a pair of torsion bars that were supposed to come out of a V8.
one end has 625 CKN other one has 624 CKN
opposite ends
L 055 and R 045

Only thing I understand is the L and R lol any help decoding would be much appreciated....

Thanks FABO

Ed