The Boat is a 1968 Mark Twain with a 327 Merc Motor, The Exhaust is in Pretty bad shape, i took it off and Welded all the holes shut that were leaking and fixed that cracks with JB weld, Cracks are harder to weld that holes So far seems to be working, but i'm going to have to replace all of it sometime, I have been doing my homework and since there are no books saying what will work with what, i have comes up with this, If i'm right<br />I beleave that a Sierra Center rise Manifolds 18-1997-1 with a 18-1999 Riser should work<br />Can anyone comfirm this?<br />Thanks<br />Here is what is on it now<br />
