I am now in the process of removing the cylinder heads for reconditioning as 2 of the frost plugs had small leaks. The Driver’s side exhaust manifold has a crack near the front and an entire piece of about the front 1 to 2 inches is now off, resulting in a hole of about 1 CC assuming that the front piece was not replaced. So, my simple question is whether it would be worth the effort of investing in headers or just purchase a replacement manifold. I’m not interested in high performance as such (just a fun to drive car now and then) but if headers will make the engine run and perform more efficiently I will consider an upgrade.
Thanks in advance.