new member with 64 c10 and questions!!!

[CyanJaguar]

hi, I posted this in the welcome section and they adviced me to post here. I bought my 64 c10 yesterday and I want to put a big block in it, but I have some questions, like

1. how much does it weigh?
2. will a big block fit in the engine bay with no modifications?
3. does anyone by any chance have any info on the f/r weight ratio?
4. how big of a tire can fit in the back with no tub or mini tub.

I have a 468 thats almost built and Im trying to decide whether to put in this, or in my Nova.

thanks.