Just an FYI for everyone - I was able to find a replacement intake manifold for that 350Q for only $250 (repaired, but pressure tested ok) from Shipwreck Salvage in Canada (312-324-0000). They're the same guys that are selling the unrepaired manifolds on Ebay for $450. I figured, since it's pressure tested anyhow, what the heck! We got it on the engine this past weekend, and are hoping to dewinterize the other engine and fire 'em both up this week!
Thanks for everyone's input!
Eric