350 to 454 questions

[ShinyC10]

I got a few questions it comes to swapping from a small block to a big block…
I ran into a pretty sweet deal I jumped on over the weekend. 1 year old never been ran big block 468, all new parts, forged internals, roller cam, edlebrock performance heads, Holley carb, performer intake, arp fasteners, oil pan and timing chain cover. I spent like 3500 all in. I’m new to messing with engines so I’m lost on ordering rods and rockers, looking for advice. Other questions are how straight forward is the swap? I know motors are supposed to be the same. I’m aware of exhaust being different. What can I use off the front pulley system? Different radiator? Tranny is a 700r4 I had beefed up for future endeavors like this. Rear end is Yukon 3.73 posi unit.

I’m sure I’m missing a lot of info yall might need to help a little more so just ask away. TIA

Heads Edelbrock Performer RPM454-R
Cam- comp cams 11-771-8
Carb- 750 Holley street hp 0-82751
Intake-Edelbrock performer 7562
Lifters 819-16
Pistons - SRP big block Chevy 212136