Hi Santiago,
You may have to use 04X only as currently only product groups 40 and 42 can be used as Debt instruments. What you can do is, in Class ID , make the quotation as unit based and assign a flow similar to dividends in the customization and then in class. You can either Suppress the flow accrued interest to pay/receive in config or from transaction itself.
For splits, you can use corporate action function.
Regards,
nikhil