I was bored so I knocked this up, I've not got the measurments of the std manifold but it's about the right size, and the runners are more or less equal but short for a NA.

Should be pretty cheap as it only has 2 bends per runner, although welding the collector could be a tricky.
here the long version of it
just for the records: 4-1 Komo-Tec Manifold, powergains in addition with a "manifold remap": 16-20PS
and most definetly: a clamoff-job
@techieboy: do you have done a paintjob to your engine?
Regards
Edited by don.hasi, 26 October 2008 - 11:39 AM.