Jesse Ocumpaugh out in Oregon did the conversion. He advertises on Gunsamerica.

http://www.gunsamerica.com/classifieds/none/_976722469.aspx

He doesn't list the .375 conversion on his flyer, but I talked to him and he said he could do the .375.

I ran a couple of boxes of factory ammo through it yesterday and it was very accurate. Most of the 3 shot groups were right at an inch and I think it would do a litlle better once I clean the trigger up (possibly the worst marlin trigger I've ever tried)

Weagle