What Rad should I buy

I am on the fence about this. My dart needs a new rad should i get a replacement copper one? Ir should I buy the direct fit aluminum one from Summit.

Can I use the Viscious MP fan with the Aluminum Rad if so do I need a shroud?

I have a Flex a Lite 150 pretty much new that i could use but not sure if i want electric or manual fan

Motor is a 318 with 4 bbl with 904 trans and eventually will be replaced with 340 so i don't want to buy stuff twice.

Need some Opinions so please help

thanks

justin