No, you have to use the mount from the Ar5 and I made my own mount bracket. I have more pictures I can upload. My supra is around the 500hp and so far so good no issues with the transmission yet. still shifts like butter. I went with the single driveshaft and clutch disk from drift motion FYI. the real down fall to this project was, I didn't have a R154 to start with. So by the time it was complete I have around $1800. invested. It will be a lot cheaper if you already have aR154 to take the parts off of..BUT, if I do blow this tranny up they are easy to get ahold of and it will only be around $500. Bottom line is if you have a blown R154 everything will swap off of it to the AR5 except shifter housing, tranny mount clutch disk. Drive shaft can be used with adapters. I just chose to go with driftmotions driveshaft.
I've been looking at clutch options and I noticed that Spec offers an 800 TQ holding clutch for the Solstice in a single disc bronze material. Got me thinking, does the Solstice pressure plate work at all with the mk3 supra? Excuse my ignorance I haven't done this swap just thinking of clutch options as I don't want to spend 2.5 k on a clutch for a transmission i don't particularly like.