As a winter project I may do a refresh along with some updates. Besides the normal checking everything over, replacing as needed what cam is best to use and what were your good/not so good results. Presently thinking of stock exhaust but that may change too. If so what is a good choice without breaking the budget. Spent the last 20+ years with outboards and getting back to I/O's

thanks

What's the difference in the cams? Do you have the specs on both?
What are the choices for manifolds and heads or is manifolds just enough?
What would be end performance gain?

Thanks

Contact some engine builders that advertise here on OSO. They have proven packages. You'll also need them to tune your setup when complete. What HP goals? Budget? The MPI intake/TB gets very restrictive at 500+hp. Stock exhaust is crap.