CAN SOMEONE HELP 76 DODGE DART

My 76 Dart Sport is a Spirit of 76, 318 automatic console, air conditioning car. Mopar collector's guide said they was never one made with a V8 in it. However after showing them the codes from the fender tag they decided that mine was the only one that they had heard of.

It is in a MCG a few years back in the under construction section.
I bought it with a wild 340 in it. I paid $3500 for it about 20 years ago.