Small block dipstick tube

Where do I find a correct oil dipstick tube for my 67 318 block? Tried to reuse the old one but can't remove it without mangling it. Have heard the chrome ones don't fit well. Also, my original tube was angled out toward the front of the block but all the new ones I see are straight. Was mine just bent or do you need to bend it yourself or leave it straight? Thanks for any help.