Vin trouble

Hello vets I'm new here. I recently purchased a supposed 76 roadrunner but it has a Dodge Aspen Hood, 7 1/4 rear end, and the vin comes back as 1968 Plymouth volare... At this point I think I'll have to register it as a custom vehicle with all the mix matched parts. Any help truly identifying this vehicle would be greatly appreciated, thanks in advance
Author: admin