how much is it worth?

The slant is a great engine. If you are low on funds right now, just drive and maintain it.

Save your money for what you really want.

It's sad that such a solid, reliable engine has almost no value in the used car part market.

My thoughts exactly, except that it makes things way cheaper and easier for those of us who like to run them ;) A great engine with little maintenance needed that should last many many years. Everybody I talk to about my Dart will mention the slant and how it's so bulletproof...But then promptly ask why I don't have a V8 in there yet. Umm it's a great engine, does the job, great MPG, and I'm still having success bracket-racing with it...Why change?

Edit: Oh and that guy claiming 8s or 9s with his slant is completely full of crap. 8-9 second 1/8th mile time sounds about right with some mods.