Help decoding this bell housing !

That's not what I said:

Unless your friend has it, and is just not pictured in your original post, you will need to come up with a neutral balance 10.5" (disc diameter) 130 tooth flywheel to go with that bellhousing.
Along with the Brewer's conversion linkage, unless you are capable to fab and modify your existing linkage. (Was your car originally a four speed?)
The later, larger clutch is a worthwhile upgrade- especially with a healthy 340.
I just found this one is it similar to the one i put pictures of ?

Mopar 3515734 4 speed bell housing 67- 74