I mix my own from scratch and do not believe the formula is ready packaged but you might want to give the Photographers Formulary a call on the chance they make something comparable.
Originally Posted by olwick
As to Marco B's comment on the differences between MG1V and MGWT. Your observation is correct, however, it is a function of the emulsion and not so much the brand of paper. MG1V is a straight bromide emulsion which produces colder tones as well as faster printing speeds. I believe the D max of both papers to be very close however because the MGWT is a split of bromide and chloride in the emulsion the low value contrast is greatly enhanced and the perception of a deeper black becomes a factor.
Believe me, I have been chasing this elusive quality since Portriga died a slow death in the early nineties. There simply is no pure bromide paper that will provide the micro contrast in the low values that a chloro bromide paper can, this is true with any manufacturer.
There is also a difference in the air dried gloss between the papers and that may have something to do with your impression of lower D max with MG1V. You can greatly increase the gloss of any paper surface by heating the still moist print. I regularly have to do this with Portriga Rapid, I hang the print to drip and when the majority of the paper is no longer shinny from water sheeting off the surface of the print I place the print on a piece of flat metal in a pre heated oven to 200 degrees for about 3 minutes and the resulting gloss is extremely high, some of which goes away with dry mounting just as any other paper loses a bit of gloss.