Yes you can run them under a cover .
make sure you get water jacketed exhaust housings.
That'll be the kicker to find along with the water jacketed exhaust elbows.
let me dig through my pics.
-beerjet-
Here are the ones I had .
(https://forum.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.socaljetboats.com%2Fcpg%2Falbums%2Fuserpics%2F10034%2Fturbostuff013.jpg&hash=24e297bb63670de5656d87b15f82f8fbb99899f9)
It didnt hurt that it was a complete Gale Banks system. ;D
Here it is with the Exhaust elbows.
(https://forum.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.socaljetboats.com%2Fcpg%2Falbums%2Fuserpics%2F10034%2Fturbostuff015.jpg&hash=a99d7d495a8440e47ce1256603c84610496a4724)
-beerjet-
Beerjet - I assume you don't have them anymore ...
Spectra 81 has them now.
He's actually gonna use them. :-\
-beerjet-