That is going to be one fine wagon!:love7:
TTBOMK, the '60-'62 windshield seal is not available from any North American suppliers. It is, however, readily available in very good quality from Down Under; several Australian suppliers including two listed here have it. The one you're after is listed for "R" and "S" model (RV1, SV1) Valiants. They have the lockstrip for it, too.
I wanna see pics when it's outta the paint booth!
Your wagon looks fabulous! What drive train will it have?