Re-manned 518/46rh tranny

I am in the market for a good remanufactured 518/46rh transmission & converter for my 95 Dakota. Stock or close to stock stall on converter is good. Anybody have one, or can you recommend a GOOD company that re-mans these tranny's. My original needs to be replaced and I don't want to have to pull this transmission out twice.(I'll be doing this at home) I already have new trans lines and a new radiator to install when I do this, & I will be adding a cooler. The engine will be slightly modded @ 300 H.P. give or take 25 H.P. Any help would be great, Thanks