The crank was checked and grinded 0.010 , they did not use any balancer on the crank, why i dont know but i will get one, what do you think about these parts

1. 440 -73 motorhome block that i have
2. Crank , will any of these brands do the job, eagle scat or k1
3. Rods same brand with 0.99 pins
4. Pistons 8.5:1 ross je venolia or wiseco
5. Aluminium or steel main caps and does they need to be cross bolted, will aluminium caps make the block last longer and what is best for street driving.
6. Does it need a girdle