I am leaning toward not getting the heater/defroster. Having been in a few of these it seems there is plenty of warm air coming into the cockpit. If I get it, it would be for the defroster.
Peter told me they had a chassis on the jig but I think that was a FIA, so it could be that yours is in transit from the powder coater. Then again I have heard of chassis numbers changing before they actually get built
.