The old Toro/Eldo transaxles are longitudinal and are based on the turbo 400. They are basically bullet proff. I know of a Kelmark GT with an injected 700+HP ZL1 BBchevy using a Toro transaxle. The biggest problem was that the best R & P was 3:23 from the factory. However, there is a company that makes a 3:73 for these. The R & P is 9.5" in diameter and can be built with most of the HP parts for the turbo400. There are also shift inprover kits available.
There was a 911 on e-bay a few months ago with a chevy small block and one of these.
These transaxles (TH425) came on Eldorados with 425, 472, and 500CI v8's and the toro's with 425, and 455 v8's. They are also relatively cheap. You can get these from the local Pick-n-Pull for about $75. I just sold the one I had a few months ago. I was going to put it in the back of a Beetle with a small block chevy, but I needed to thin down my projects.
There was a 911 on e-bay a few months ago with a chevy small block and one of these.
These transaxles (TH425) came on Eldorados with 425, 472, and 500CI v8's and the toro's with 425, and 455 v8's. They are also relatively cheap. You can get these from the local Pick-n-Pull for about $75. I just sold the one I had a few months ago. I was going to put it in the back of a Beetle with a small block chevy, but I needed to thin down my projects.