Questions about re-drilling axles

I have a 72 Duster with a stock 8.75 rearend and stock axles with the small 4" bolt pattern.

Who is near Akron Ohio 44305 that can re-drill my axles to the 4.5 pattern?
Would they need to weld-up any holes in the axles before re-drilling them?
What does this normally cost to drill the axles and 2 drums?

Also, is it possible to drill these axles to a 5" Chevy bolt pattern? I'm only asking because I know someone with some affordable rear wheels in the 5" pattern.