LegendBaseline: Balanced and blueprinted RBRE 493 engine with ported Edelbrock heads, .638-inch lift cam, M1 intake, 950 Holley, and 2 1⁄4-inch race-type headers.
Carb: Replace 950 Holley with 1,000 Race Demon carburetor.
Spacer: Add 1-inch, 4-hole, tapered Wilson Manifolds spacer. Change to 1 7⁄8 tti headers with primary tubes 10 inches longer.
Roller: Swap RBRE .638-inch-lift solid flat-tappet cam for Comp Cams .575-inch- lift solid street-roller cam.
Jets: Change from stock 85/93 jets to 83/91s.
Two tubes: Switch from 1 7⁄8-inch to 2-inch tti headers. Both have the same length primary tubes.