360la cam help.

Yes with a larger cam you'll need the valve spring pockets cut to accept dual springs and have the valve guides cut down for clearance. Any reputable machine shop can do this and it isn't too expensive. As to springs, use what the cam mfg. recommends. I wouldn't go with standard lifters on a performance cam. Anti-pump up type are far better. Plus most cam mfg.'s wont' warranty the cam if you use other brand lifters.