Greetings, and welcome to the forum, Mr. Psychopath.
Can't believe I'm saying that
Patrick is correct. I also spoke with Peter Portante regarding a RHD 289 ERA around 10 years ago, and the extra costs Peter was talking about for the changes required for a RHD car were in the order of USD10k
If you call him, probably not a good idea to introduce yourself as "Psychopath"
Cheers,
Glen