manifold spacers

[Tedscj@aol.com]

Hi,
This may turn out to be a really stupid question, but here goes:
Remember all that talk about wood carb and TB spacers?  What about intake 
manifold spacers?  The reason I ask is that I might buy some Vortec heads and 
try to adapt a TPI manifold to them.  Vortec Intake ports are raised about 
.25 inches so the old style manifolds don't mach up correctly.  (Also the 
bolt pattern is different.)  I was thinking that a spacer between the 
manifold and the heads would push the manifold up and help solve the mismatch 
problem.  But I don't have the facilities to machine anything out of aluminum!
Am I totally whacked, or is this a possibility?
Thanks,
Ted