Recently found that at speed I was leaking oil out of the bottom of my oil dipstick tube. Found what was supposed to be a correct replacement but it was way too short with the dipstick handle right at the exhaust manifold. Anybody have a part number or source for a good replacement that's the right length?

If you original tube isn't damaged, you can just replace the o-ring.

BOP engineering
http://bopengineering.com/pontiac_replacement_parts3.shtml

Not sure if it matters but...
Remember, if you have a full length windage tray, it takes the dst59a internal tube. If its a 3/4 windage tray the dst59b internal tube. Call it a learning experience ..

Pics on my photobucket

-Kyle

Duh. Sorry. I though you were talking TH400 dipstick tube.