I need to replace my rusty original one as its falling apart and I need some advice as to what to put on?

 

Ported stock with harvey uppipe from as performance if u want best,
but would need remap to get most from it,

or just get a replacement stock set from on here

 

Anyone know anything about looking at this?

 

Looks suspiciously like a cheapie equal length manifold. Not sure that particular style of flexi joint is a particularly good idea either.

As has already been said, get in touch with Alyn at AS Performance and have a chat with him about the Harvey manifold.