I don't have a Carver but I replaced my engines, transmissions and V drives on my 1993 40' Mainship. I am very happy I went with Mercruisers with the digital engine displays. I had to also change props but the boat went from 16-17knot cruise to 23 knots at cruise and my old WOT was 25knots it's now slightly over 30 knots. I have 8.1L HO's and replaced 7.4Ls. Good luck with the project I am very happy it was done, I also changed the generator I wanted to start with all -0- hour engines. I plan on keeping the boat at least another 10 years. Regards Bill