There is a biz called Stadium Suspension here in Quebec that specializes in all types of suspension components. Thierry is the owners name and he speaks perfect English, if that helps. They have done good work for me, hence the recommendation. For anyone in the NorthEast give them a look-see, tell him I sent you.
I paid obscene money for a set of Racetech piggybacks for my racebike, and they were valved way too heavy. Stadium solved that issue, and if I'd have found them earlier would have had them build me a comparable set for half the dosh. Since then they've rebuilt a couple sets of my Works Performance too.
The days of buying rear shocks and running them for 25 yrs is over!