LA 408 with Eddy magnum heads.

you will need aftermarket retrofit oil through the pushrod lifters unless the LA block is late with HR provisions- specify
good question B3122w5
you will also have to specify compression height to get quench where you want it - say .035 with whatever gaskets you want to run common is .028 Mr gasket or .040 +
you will also need B3 kit if roller tip rockers