Old skool mechanic looking for perf tips

[Megadad7]

So I’m an old skool Mech that has a VZ v6 manual Ute. 3.6 something tech engine…..
It’s got a 25mm MACE spacer, standard exh manifold but 2.5” cat back sports system.
Pulls ok but could use some pep!
So there’s a couple of Q’s…..
1. Is it normal to lose drive/clutch dis-engagement after leaning on it, say 5-5,500 RPM? Like literally stab the clutch & she re-engages straight away…..?
2. Are a set of ‘headers’ & new cats even worth it? What do the factory headers flow?
Would appreciate any thoughts!
Thx

 

[EYY]

1) No. should drive like any other manual

2) Headers and cats won’t make it any quicker, it’ll just sound different.