Last spring I had planned to big block swap my 79’ k30. Ended up loosing my job in April so I put the swap on hold for a bit. Things are doing better now and decided to invest $10-$15k on a new motor n 5 speed. I have another k30 crewcab that’s factory big block, so I’d rather not build the same truck twice. Decided on a 94-98 12 valve Cummins. I’ve done a lot of research that last 6 months and now that I have the money ready I took the old dually to a good 4x4 shop for a quote on the swap. I can do mechanical work but no shop or lift or welder. Talking on the phone I was quoted $12-15k and scheduled a day for them to inspect the truck. This is the quote I was given at the shop. What do you guys think?