The holes in the transom should be the same whether its dry stainless marine or wet with a rubber hose and exhaust tips.

I have a built 524 and with wet exhaust at idle it's loud. I added Gibson exhaust to it and it took the bark out. It's still loud, just not painful. First time I started it in the marina the echo off the break wall was like thunder. I started it once in my drive to winterize it before I put the mufflers on. It was Halloween and I scared every kid for 1/2 a mile.

I got the Stainless Marine exhaust put on the boat and with the 6 inch risers there shouldn't be any issue with reversion. That along with how Stainless injected the water almost to the rear of the risers I haven't had an issue what so ever.

Great. That is good news. Coming in late but wanted to add... Don't hesitate to call Velocity with questions. They are a great resource.

By the way... A Velocity will never look like a sleeper. LOL.

Padraig

I have made fast friends with Scott McCormick. He has helped my above and beyond what I would have expected. The guy is just something else.

These came in today. I'll be taking the engine over to BES Racing Engines later on this month. The boat will be nothing but a shell here in about three weeks.