Question as to flywheel material: the GCR speaks to diameter but not material. This has probably been answered before so mea culpa - but on a LP 1275 can I use an aluminum flywheel? Thanks
4. Any flywheel of stock diameter or larger can be used,
provided it attaches to the standard or permitted alternate
crankshaft at the stock location. Additional fasteners can
be used. The diameter of the flywheel includes the diameter
of the starter ring. Cars that are permitted a specific
alternate transmission on the specification line can use
a flywheel of stock diameter or larger for that alternate
transmission.
4. Any flywheel of stock diameter or larger can be used,
provided it attaches to the standard or permitted alternate
crankshaft at the stock location. Additional fasteners can
be used. The diameter of the flywheel includes the diameter
of the starter ring. Cars that are permitted a specific
alternate transmission on the specification line can use
a flywheel of stock diameter or larger for that alternate
transmission.