Engine swap I6 to 350

[flat_mountain]

I'm planning to swap the 250 in my '71 C10 for a 350 I pulled from an '88 c1500. I will be reusing the T-350 trans that is in the truck already. I have also acquired a set of V8 engine towers. I am pulling the TBI off the 350 and plan to run an Edelbrock 650 carb and perfomer intake to simplify things. I have a few concerns though:
What kind of problems should I expect to run into?
Will the stock throttle set up work or will I need to make modifications?
Is the 6 cylinder radiator going to work or will I need to upgrade?
Can I reuse my stock power steering pump or should I use the pump from the '88? I'd like to keep the serpentine belt and use the pump off the '88 but not sure if there is a difference in the hose fittings/pressure.
What type of wiring mods will I need to do or will the existing wiring be fine?

Any help is much appreciated. thanks