Would it be possible to find a stock manifold ? if I was to find one would it fit with the space limitations?

It seems to have the other exhaust manifold you described, flat.

So this is a bit of an odd post but recently I've been working on a K295-2AX powered cart that was given to me for free. It is very sketchy, to say the least, however, the thing can be heard from a mile away. I would love if any of y'all had some advice on what's the best way to attach a muffler, an...