I like it a little better than the '65 Rivvi piece. The kit engine has a reasonably accurate FI unit... although I'm doubting the realism of stabbing one in a C-Body GM luxoliner.
The other really good Buick nailhead is in the AMT Double Kit Custom '32, very nicely engraved and accurate.
Either would be a good substitute for the 427 Ford, which can be put to good use in any number of other projects.