head removal

[smegun]

is there a way to separate exhaust manifold to take off a head while engine in …. shop manual states rem engine ...got a 2002 gen 1 sport 3.9 im looking at deno manual for a 2006

object to change gasket and press a new guide / do a valve seat head job at a machine shop or replace

can I separate the torq clamps on the catalytics and take the heads out with manifold attached ?