Hello need info help, one would like to add a 455 and 400 into the car. Fit factor. or should I just use a 250 6 chev, the motor is froze parts missing , not feazable to restore motor. Anyone with 46-49 with a 455 , mind you this is a 'special' maybe a smaller galley. Have option to look somewhat original in using a 250 str 6 chev to be somewhat the right look under the hood. thanks c_geske@earthlink.net