Let me refer you to this webpage:
http://www.panterasbywilkinson.com/webpages/catalog/ill18a.html
It is the De Tomaso catalog, as hosted/displayed at PanterasbyWilkinson.
Click on any number to get more information on that part.
Bear in mind, you cannot remove the long pipe with the engine installed, without cutting it, of course.
And likewise, insert a full length replacement.
Vendors sell kits that have both pipe runs as a two pipe unit.
And any pipe you source will not have the proper raised bead for helping retain the rubber hoses. Some owners have found success in soldering a ring of solid copper wire to serve as a suitable bead.
I know this isn't all the info you asked for, but it is a start.
Larry
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