Yes, great project. I have been racing and building vintage Mustang race cars for 8 years now and would be happy to share my knowledge and experience - so do not hesitate to ask.
In the beginning I used Cobra Automotive in Wallingford, CT a lot - and still buy special parts from them from time to time - but must also say that it is my experience that building the strong performing Mustang these days can take two quite different roads ..... going for the true "as they were raced back then" setup OR maximizing performance with todays performance knowledge and parts.
We also did a full ground up resto of SFM6S006 - one of the very first "Carryover" cars - and have lots of pics. from then.
Many US built and raced Mustangs are really not true to the original FIA homologation - but are more just look a likes, running way stronger engines, lighter clutches, modified transmissions, lighter materials etc.
Good luck with the project :thumbsup
:cheers
Anders