[FC] here's smoke in your eyes

[Ben's Bus]

Hey guys and gals-

I have been getting burnt oil smell in my heat and some gray smoke comes in
through the heating vents.  Also, the oil is blowing out the top filler tube.
The last time my van was in the shop they told me the blow by is getting worse
and the oil is leaking everywhere.  It was used when I got it.

Anyway, what are the chances that replacing the Vitons will take care of the
burnt oil smell (burning on the manifold), and the smoke problem?  I have a
good lead on a rebuilt 110 engine and a great installation price quoted.
Would it be smarter to get the rebuilt or fix the smoker??

Thanks!   Ben