Buick 215 parts for Buick 300

[jjohanski]

Can anyone tell me which 215 parts can still be used on a Buick 300?
Specifically--Flywheel, clutch and cover, Starter?  
I am again thinking of doing a Buick 300 with aluminum heads and 4 barrel intake rather than a 215.  
Jim Blackwood?  
Thanks in advance for any help.

[mgb260]

Only rocker arms and shaft, cams.

[BlownMGB-V8]

The heads will bolt up but the only reason to use them would be if you were building an economy motor and were real weight conscious. Could use late Rover heads OK. Uses a more common flywheel pattern, rods are longer, deck is taller and intake is wider. Can use BOPR intakes with spacers and fabricated lifter valley cover.

Front cover will interchange along with oil pump. Valve covers cross. Pan doesn't.

Jim