Correct, just the shaft(so far) I am going to magnaflux and inspect the other internals but being that this car has sub 17K miles most will likely be alright. $6K is the going rate for an R160 as well from japan(new) plus overseas freight.
I’ve been doing alot of resesrch on these transmissions over the past few hours. I have a theory that IF I could get a V160 supra input shaft, I can do some machine work and make a superior shaft to that of what is in the R160 using the V160 part. My buddy Mike Duise @ Newcountry is looking into it for me as we speak.
I can snap a picture of the R34 internals, they look exactly like that supra V160 internal picture. Same ratios and all.