Doctor, apologies, I didnt mean to disbelieve or doubt, just my lack of knowledge. Thanks
Nowt to apologise for, it was a pretty blunt reply.
For future reference, Haynes covers the 4 pot 8 and 16v, and 2.5/3.0 including decent wiring diagrams.
The V6 is the same across the board except that 2.6/3.2 are drive by wire: no throttle cable or plug leads: instead a coil pack for each bank; it's all electronic. Also no secondary air injection or exhaust gas recirculation, so less plumbing... But same camcover, cambelt, fuel and cooling systems.
2.2 is effectively a stroked, iirc, 2.0 16v, same heads and gaskets and same layout... Only difference is again that the engine is DBW, so no throttle cable and a coil pack instead of leads.
Drivetrain is identical from '93-'03, as is the basic body shell. Interior trim and body bumpers/cosmetics are all that separate a '98 3.0 from a '00 one
The wiring is slightly different on facelift cars, but the later diagrams in Haynes are still accurate enough to get a feel for what's going on.
Between the Maintenance Guides here and Haynes, you can't go too far wrong