Clearly. I do remember it now that you've mentioned it, though.
According to wiki, Garcia is credited w/ guitar on "Today" "Comin' Back To Me" and "Plastic Fantastic". The first 2 both practically have only 1 noticeable guitar part so it's safe to say that's what he's playing (besides, the part from "Today" doesn't really sound like Jorma) and he was probably just added to "Plastic" to thicken it up, since it's the most RAWKIN track on the album (not a highlight exactly but I still like it). "She Has Funny Cars" is credited to Jorma and Marty so it's pretty clear that Jorma came up w/ the main riff that the song is built on and Marty probably did everything else.