[Healeys] Exhaust Manifold Code for BJ8

[John H]

Hi,

what are the correct AEC cast codes for BJ8 front and rear exhaust manifolds?  Are there more than for BJ8s and if so, what are they?

Word is that if I convert HD6s to HD8s, I have to have the corresponding exhaust manifolds too?  I have the HD8s and intake manifold refurbished and rebuilt already.  Any advice on this conversion?

TIA

John Homonek
Atlanta AHCA
1959 BN7 - 1974 Jensen Healey