Swapping LT1 from '94 buick roadmaster with ported OE Iron heads into '87 regal. For those that have done this and used Iron heads and not Alumininum f-body heads, what cams can be used? This car will be used for street and strip and emissions is not an issue. When I run camquest, it says machining to the heads will be necessary...whats the specifics on the machining required?