1. Does ordering a part #2220-103 get me all the parts (a to t) needed that are listed in the parts list?2. Do the grips from my 2300 transfer over to the new grip frame or do I need to buy new ones ?3. Should I replace the hammer or is this listed in a consolidated parts list?4. Is there anything other than Crosman parts I need to complete this?Thanks. I appreciate all the help I can get!