Looks like Haas has been through a lot of racquets. I see that there are three of his 238.1s for sale, that he has used the 238.4 and a couple of Dunlops. His frames seem to be around 360 to 370 grams.
I think that Murray's frame would be fun to have but they are so rare, especially in personally used form, that I think that it would be impossible to get a pair of them. WRT Haas, it seems that there are several of his older frames still available.
I wonder if FabFed has tried to get a Murray frame.
4 x IG Prestige MP, 70 cm, 376 grams, 386 SW, ALU Power @54, Prince Syn Gut 16 @58