hey everyone! So im finally starting to put my motor together. its a mark 4 block, i have a pair of 1968 heads, a weliand tunnel ram. The block is all standard and very clean. I was told it was a marine bottom end. I now need to order a cam and with that figure out what size carbs to get. Im a ford man and also have never delt with duals before so im very curious as what i should go with. I plan to keep the engine standard if possible and this will be a cruiser and maybe make a few passes now and then. thanks!