1990 Regal had a 5.0 liter Mercruiser. The boat hull only without engine or any engine parts can be bought for $900, Which does not include the trailer. We will install both a rebuilt 5.7 and a new interior for $6000 more. Not parting out this boat. We will be restoring this one. LML 5.1.12....on. Largest inventory in the southeast.