To fit a s/c car, manifold will need to retain the fixing points of the heat shields.
The cradle for the s/c is supported at those points.
This was one of the problems with the manifold Nemesis got hold of.
Left the cradle dangling by one corner because of missing heatshield mounts.
Oh and it fouled on the steering amongst other things - yawn
Just had a look at the pictures in this thread....
Only the pro-lex manifold has the required mount points for the s/c cradle.