440 Source Big Block Alum. Cylinder heads

I bought a set...
In general all mass produced aluminum heads should be checked out since every aspect isnt individually checked before you buy them.
depending on how high lift of a cam you get you time want to get better springs and retainers and locks.
Also get the valves checked.
Most people seem happy with them and for the price and weight savings in general im happy with them. ALso the only heads i think with stock port locations and no huge edelbrock stamps so if you paint them no one will know you have high flowing aluminum heads!