In the Boston area, I highly reccommend Rob Del Gallo and family at Factory Collision and Restoration, 1163 Washington st South Weymouth Mass, 02189 781-331-0113
Rob, his son Tony and the other repair technicians do excellent, extremely high quality, award winning work. Every job is done with the utmost care. They are currently completing my 73 Convertible (collision damage) which I personally took 6 years to re-do (89-95)with all NOS items. Rob battled with the insurance companies on my behalf to have the car repaired correctly.
All phases of restoration and customization work are completed in shop, along with any/all paint combo's. If you can dream it, they can create it. Additionally, they build custom motorcycles and kit cars. Streeters to full race, no problem.
As for engine, transmision and rear end work, no one is better or more reasonably priced than Dana Herd @ Custom Automotive Machine Co (CAMCO) 110 East St Weymouth Ma, 02188 781-331-6763. Dana can rebuild your original block, create an unbreakable street rod, or customize your 1/4 mile fuelie. Rodder or Rocketship, no problem!
I have had the pleasure of working with and knowing BOTH parties for the past 15 years, and have personally had many engines and cars restored/rebuilt/repaired. The 2 shops make a great combination for any type of dream car (or bike)you may want to create!
Family comes first....but nice cars come a close second!