I'm kinda confused, the block # that's in my truck is 3956618, the suffix code is V0212 WH. The block says it's a 327 from '68, a 302 from '69, or a 350 from '69. The suffix codes says it's a '68 model 307 with a 2 bbl. It does have a 2 barrel on it, but I'm not for sure what's in it. I was told it was a 327, but I want to be for sure. Help please