Hello and thank you for your interest.
I just purchased the 25/1 transmission as I require it for the build of my GT40. The housing came with it. All I know is that the transmission was overhauled directly by ZF about 25 years ago and sold by a Ferrari dealer to the person I have purchased it of. It has been in storage since then. The outer transmission shows no wear at all. Same goes for the internal gears, which I have been able to confirm by now. Sorry, but that is all I know.
I have found out that the bell housing fits an 289 crank case (pitures added). However, I'd be surprised if the mounting holes were any different on an 302 crank case.
For now I have recieved rough figures on how much I should be expecting. Price is depending on demand and offers. I will have to purchase a different style bellhousing for the build of my GT40, which is why I depend on the highest offer. I hopy it sounds fair to everyone.
Best regards, Markus