I need a 1979 dodge pickup 383 engine replaced, who could do it and for how much?

First, you will have to do your homework. Check with the local shops in your area. Look for Shops with a AAA rating or check with the Better Business Bureau (BBB). Then find a shop that meets the criteria and contact them. The price will depend on the engine you purchase, whether it is a rebuilt or one from an Auto Salvage. The labor time can vary from 8 hours to 12+ hours for a complete engine assembly with transfer of parts, ie: P/S pump, A/C...