Other than Wzorek's in Westfield, are there any good differential shops in western Mass? I'm a little wary of Wzorek because of his high labor charges. Has anyone used Cotton's Performance in Agawam?

 

fwiw, I hear the that Wyzorek is very good, tho I have not personally used them. I know they were known for their work on 'vettes. There used to be Gaunt Performance up on East Mtn Road, Westfield, but I believe he has now moved to Agawam (see Switchboard.com). He did my springs and I know he has done A LOT of work on a few of the W.Mass guys f-cars (RONIN, 9SECONDLX). I have heard Cotton's is good as well, but don't they specialize in Buick Grand Nationals?

 

NE Dyno is in worchester. not sure if they do gears, but they are good