[69boss429]

Jon has really done a great job with his new Boss 429 heads.
A basic package of heads complete with springs,valves,retainers,and rocker arms as well as valve covers is $6000
His new manifold is I think $700
And yes,the stock B9 manifold or the Blue Thunder dual quad will fit but not make quite the HP
Flat top pistons are the order of the day with this combo.
When I get around to building a Cobra it will have a Boss 429 under the bonnet