Putting 4000 quattro manifold on '85 Coupe GT?

[smurf <bjmccabe@iupui.edu>]

OK, I've heard that for some reason, the 4000 quattro manifold is superior
to the stock Coupe manifold, and swapping one in my car will yeild
performance gains.  Anyone care to comment on this (personal experience,
etc.)?

Am I correct in thinking that the manifold will drop right in, but using
both the manifold AND downpipe from a 4000 would require me to modify my
stock exhaust on my Coupe?

Any help would be appreciated.  Thanks,

--
Barry J. McCabe
'85 Coupe GT - daily driver
'84 Jetta 2dr - beater (recently beaten)
bjmccabe@iupui.edu