Direct replacement bravo upgrades?
 

I am looking to upgrade the B1 drives that came on my 1999 353/HP500's. Amazingly they have never exploded, but this year we are at an honest 700HP/TQ and on borrowed time. Any advice on what high capacity drives are available on the market either new or used that will swap out with the existing B1 setup on a 353 and not require reworking the whole Latham steering plate setup and transom assemblies? Thanks

SCX. Swap the helmet and bolt them on.

What do 1.5s go for on the used market?