Is there a Boston area Prius-only or specializing in Prius Indie Mechanic/Shop?

Hi: I searched the forums for an answer to this specific question, but couldn’t find it.

I’m not interested in a Toyota dealer, or a ‘good independent shop’.

I’m hoping to take my ailing 04 prius to a mechanic or shop that only repairs prius cars or does a huge amount of work in them.

I’ve taken my car to the local dealer and to a good independent shop over the car’s issues: a leaking exhaust manifold and a very small EVAP leak, quite possibly coming from the top of the gas tank. Both places recommend chucking the car. I’d like to find a prius specialist who might have an alternate diagnosis for the very small EVAP leak (yes, I tried the gas cap) - and perhaps a cowboy fix for the exhaust manifold, such as a high temperature version of JB Weld. Both places quoted about the same for the two repairs: $1400-1800 for the manifold and $3,000 for ‘a new gas tank’. The manifold replacement is made complicated by my catalytic converter defender shield that will take an hour’s labor to drill out...
Thanks in advance.