Heat riser part?

[dads_69]

I picked up a set of manifolds tonight off a 70' 440 magnum. Right side needs spring, exhaust riser, can they be bought new is my question? I've been looking somewhat, but have yet to find a rebuild kit or just the won part.
Thanks Mark

[greenpigs]

I think Year one sells a kit that has alll you need.

[Arigmaster]

I ended up putting an electronic choke on mine. An exhaust leak developed on the inner opening where the rod goes through the manifold for the flap so I removed it and taped out both holes and put bolts into both sides.