Which Oil Dipstick?

That Moroso stick won't work because It's threaded. Ours are a push in type. Not that you couldn't tap the block for a screw in type though. This might do the trick: Chrome Engine Oil Dipstick & Tube Set : suit Slant 6

That link looks perfect. Most of the used /6 sticks I've found, people are charging just as much.

Thanks for all the tips, everyone. This should work!