Ciao Serge,
it's good to hear from you.
Just to let you know I personally take this challenge against the federation just like a sort of time break.
I will work against the idiots (and mafiosus) that don't want to recognize a real race car and I will promote the right we have racing with the same car configuration.
Regarding the Sebring specification I have some pictures where the bigger wheels are displayed.
I also have the entry List.
I've no other information, but I can say that nobody is able today to recognize a weber or a solex.
I will go for a single weber 40DCNF since they fit on the stock manifold.
Regarding the pistons from CPS I've just made a mold of my combustion chamber and I sent to them the specification as follow:
diam 77 (using mecaparts liners)
wirstpin 20 blocked into the conrod
I also sent to them an old piston.
If you are in need I can help you, they are Italian but for sure they speak "Engliano".
Please note I have unshroud the area near the valves. So it's better you send your own molds.
price is 186 euro each tax included.
Regarding the springs I have solved the problem using a spare from Fiat X1/9, but you could ask to Catcam in Belgium, since they have a huge catalogue.
I will also change the valve train using 7mm stem instead of 8mm, made to measure from IVAM (italy). For the valve guide I will ask IVAM as well.
I will use a made to measure retainer (using the valve spring locks of Renault gordini engine 1300)