LHD conversion

[Rocket Roller]

Dear all,
I am new on this forum.
Finally I decided to buy a Bristol 403, as stablemate for my other classics: a 1934 dove grey Alvis Speed Twenty SB Drophead Coupé, a 1958 dark green Austin Healey (Frogeye) Sprite, a red 1959 MGA 1600 Roadster, a light grey 1960 Mercedes 220 S (Finntail), a red 1964 Hillman Suprminx Series 3 Convertible (still a restaotration project) and a white 1973 Alfa Montreal.
Once I live in Estoril-Lisbon, Portugal, I was trying to find a lefthand drive Bristol 403, wich I didn't find any one so far. I even doubt if a 403 LHD was ever produced (?)...
So, before I move into buying a righthand drive Bristol 403, I'd like to know what parts are needed in order to do the conversion. If the LHD conversion is possible, a steering rack at Bristol Cars Company costs around £3000,00!...
Is this steering rack used in cars others than Bristols?
What else is required to do the conversion? Is there a key lock on passenger's door?
As far as I understand, the conversion shouldn't be very difficult to do.
Regards,
J.