So...I bought a stock 68 318...

...turns out it's. 040 over with a. 284/.484 cam, pistons .007-.008 in the hole,aluminu,flat-top, two valve reliefs...heads are #4027183 freshly done with hardened seats. I do have some 72 U heads off a 340 that could be done...but thinking the money could be better spent on closed chamber heads. This wiil be for a DD 85 D150...Cast yourvotes for head choices and cheap HP!