Slant bellhousing? He's got a 273...
If it's 143 tooth, 11 in. clutch- it's a truck flywheel.
Passcar flywheels came in several sizes, most commonly the 130 tooth, 10 1/2 in. clutch size.
No go- crank pattern's different.
He wants you to do a couple of days of fabricating to avoid doing a 10 minute bellhousing install? Run away. Quickly.
