I was about to replace my exhaust manifold when I found that the cylinder head was cracked right where the end bolt holds on the manifold. I have an old 258 head with low miles that I pulled years ago and a 4.0 head with about 160K on it. I'm leaning toward the 4.0 since I already have the mopar efi but was wondering what everyone would recommend as to reconditioning it. I'm not sure of the miles on the bottom end of my engine (was supposedly rebuilt). Iv'e heard its not a great idea to put a freshly rebuilt head on an engine with high miles. I guess I'll do a compression check first but what is the minimum work I should have done to the head?