Well, Parabous...,
What a question....
Are you aware what you are getting into?
A car up to concours level is a very high expectation.
Expect to do a lot of work, especially detailing, exact and proper detailling,
and throw in a lot of money.
Even if you do it yourself, expect a(n elevated) six-digit number then.
Don't know how good your own 280 SL already is,
but see Brian Peter's homepage:
www.motoringinvestments.comand the description of his "award-winning restorations",
then you have already a pretty good overview of what you are getting into.
Basically it is about the following:
1) start with the best survivor (!) car you can get
2) make everything (at least) look like new
3) use as much the proper materials (leather, paint, carpet, hoses, etc.) as possible
4) apply the utmost highest standards you could achieve
5) and mainly...
...bringing a car (a Pagoda here) to award-winning condition is not so much about parts availability. You will find yourself able to commercially buy most if not all parts for your project you could imagine..., it's more about money.
5a) The main hurdle is to bring up the car to proper standard.
Today's jurors and judges are so trained, they see everything. And these cars are full of very special details like proper insulation mats, proper hose clamps here and there (different of course based on the location where they are placed), proper stickers, what is yellow cadmium plated and what is not and so on.... - and lots of differences based on the built year!
Basically,
it takes a lot of experience (!) to bring up a Pagoda fully to concours standard...,
there are many cars out there which are from their overall condition more or less perfect.
However, is always about the tiny details to make the difference.
Or, with other words, even the most expensive 'Hemmels' and 'Brabus'-like restorations, which we have discussed here pretty often, are usually a tank full of little incorrectnesses, which render them to "
not good enough for concours level" although a $299,000 price tag was already posted behind the windshield....
Good luck!