What are the best convertors? PTC, B&M, Dynamic, Turbo action

I have used Coan, Dynamic & Turbo Action.
Not a bad one in the bunch.
Customer service has been great at all 3 of them.
Call any of them & give them your specs & they will build to satisfy.

Be prepared to spend some money to get what you want.
A 200.00 convertor isn't going to cut it.