Which clutch and flywheel do I need?

Alright guys I'll try to keep this as short as I can as I tend to get super long winded. I'm trying to decide which clutch and flywheel to put in my Dart when I swap the engine. I need to get my 318 working with my 3 speed. What I need to know is how many splines do I have on my input shaft? What diameter and kind of clutch would work good for my application? And lastly, what flywheel do I need to buy? I'd love any advice I can get. Thanks, Grant.




Here's some details on the engine and car

Motor:
1968 318, 9.2:1
freshened up with new rings, bearings, valve work, etc.
Comp High Energy 268h cam
Edelbrock Performer intake
Edelbrock 600 CFM carb
Hooker Competition Headers

Car:
1973 Dart Sport
Dying Slant six basically running on 4 cylinders
3 speed on the floor, very sentimental and it needs to stay.
7 1/4 rear, yes I know it's puny but it's temporary.
pic heavy build thread coming soon :glasses7:



Thanks in advance for your time and help if you've made it this far!