<VV> My dropped valve seat

[Jeffrey Hennessey]

Greetings all.  A while ago I reached out to the group to find a competent Corvair engine shop to have a look at my dropped exhaust valve in my 1963 Spyder. 
My car is presently in good hands (great hands) at Competition Motors in Portsmouth, NH. I've opted to do a complete top overhaul. Everything I need is off the shelf at Clark's and already delivered to NH. I need two properly rebuilt cylinder heads. The existing heads are beyond repair. I called Jeff at Corvair Ranch, whom I fully trust. It's a minimum of two months to ship them. I see a number of offerings on Ebay, but I don't want to take a chance. Does anyone have alternate sources?
Thanks, 
Jeff