Originally Posted by jwfirebird
who does the conversions? is it a gm factory over there or an aftermarket company?
around here they had companies that did mods to cars like chassis companies and such. the cars went from gm to those companies directly and then to dealers. like when they were thinking about making thirdgen fbody convertibles they sent them to be made. to some thats a dealer option to me its just an aftermarket mod at that point.
I don't know about England, I know US cars imported to Australia a few small companies do conversions on older cars. Meaning parts used are often on a car by car basis, no two may be the same, or 25 might use one switch they could get in bulk.
The F car convertibles: While GM wasn't offering a Order package, a few GM contract conversion and up-fitters companies did. One of the later GM contracted F car convertible up-fitters did Early 1982-1985 Convertibles sold by some GM Dealers. From the 1950'* up till now some Dealers and Up-fitters have made special package cars, even without GM'* backing.
Case and point: Earnhardt Chevrolet. A buddy of mine had a 1991 Chevrolet C-1500 Dale Earnhardt Edition pick up. You will NOT find any catalog of the special parts it had from the Dealership & Upfitter. Othen odd balls like Mitcham/DKM Macho Trans Am'* of the 1970'* & 1980'*.
No COPO'* for ordering like Yenko'* had (1969 Yenko'* have 2 COPO order numbers that gave them Z28 spoilers, 140 MPH speedometer and standard issue rally wheels, ZL2 hood as well as Z/28 front and rear spoilers)
Export models can be just as bad. Especially if a small batch and not a separate model with catalog listings. COPO cars which could be anything from an Export model getting a different lamp to a I-6 Impala convertible for Hertz to a Daytona Yellow 1970 Chevelle Super Sports (not a regular 1970 Chevelle paint color). COPO'* are the hardest GMs to repair and restore, let alone research.