Performance info for 170 CI

I've been inactive on the forum for the last few months and would appreciate some updated info. Recently retired and am in the process of building a new house and shop and am anxious to get the shop completed so I can get back to restoration of my '60 Valiant. Have any changes occured with the vendors of performance parts for the 170 CI six? Particluar intesest in headers, manifolds, carbs, cams. Same vendors? Same problems with vendors' etc?

Appreciate any info.

Thanks