Few questions about engine swap. 3.8 to 5.0

Alright guys little background, I have a 1998 convertible mustang base (v6) that I bought, I put a 5.0 from a 1995 mustang GT in it. I bolted it up to the v6 trans just fine. I just have a few questions if anyone can help.

1. Do I need to get a new speedometer from a 95?
2. Do I need dash wire harness from a 95?
3. Do I need a new starter/alternator from a 95?
4. Do I need a new fuel tank from a 95?

{{ Parts I've already bought from a 95 5.0 and am in the process of installing - Radiator, engine brain box, efi engine wiring harness, power steering pump, fuel lines, fuel pump, flywheel, battery, FULL EXHAUST SYSTEM.}}

THANKS FOR any HELP.