Neat site guys Pro comp heads ?

Dealing with skip white perforamce and looking at ordering roller lifters cam , heads, oil pan, pick up and pump same has there 505 crate have a 489 **** mark 4 . Wish I saw there 505 crate back when I bought this engine from S + J spokane they wont return calls , valves guide were never done in the 781 heads Procede on hot rodders