Not much is known of the Longchamps here in the US, since none were ever officially imported. Perhaps 20 are in the country. Matt Stone's excellent book, 'The Illustrated Pantera Buyers Guide" mentions that the running gear is 'virtually identical to the Deauville' which is even less-well known but used quadruple rear shocks similar to Jaguars. A cutaway drawing of the Longchamp shows single shocks simlar to the Mangusta and Pantera, so the situation is a bit confused. If you remove & measure your OEM shocks as-assembled, then remove the coil spring and again measure it collapsed, either Koni or some other shock manufacturer will certainly be able to supply a unit that fits. You can then do all your fellow owners a favor by posting your experieces with this beautiful machine. Few vendors have any parts for this car, but Dave Adler (owner of P.I and this site) drives one regularly, and Gary Hall stocks a few obscure parts for all DeTomasos.
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