Chuck, I also had the incorrect T-3 headlights in my 70 Nova until recently due to the fact that the correct 70 style with the vertical lines in the triangle of the T-3 are finally being repoped..
I bought those thru Lectric Limited. The ones I had in the car were the 57 Chevy style T-3 which were all that were being re-poped at the time. I sold them used on E-Bay and got I believe $45.00 bucks for the pair.. They were in excelllent shape. I bought them from Lectric Limited and had them in the car for about 8 yrs...
The repro ones are much brighter than the originals and I would trust them more in the car than relying on old ones when cruisin at night....
Rich