Where in MA? Western part? Just curious. I was born in Boston, and moved west during the years. Got as far as Winchendon before moving south.
You'll find more Triumphs, of all varieties, in the eastern part of the state, I think.
Here's another link that might help, at least to get you started re: MA.
http://www.mass.gov/dep/air/community/import.htmAs for shipping vs. buying, I knew of a guy who brought over his MG (right hand drive one) and I believe he was able to drive it unchanged for at least a year. Don't know what the time limit was, I lost touch with him and some others after I sold my MG. I'll try and find his address.