[Modena]

Thomas, you need to ask YOURSELF some questions;

1) are you willing to go through the extra "stuff" (hassle, expense, etc) with an O/S kit? Chassis testing, shipping, converting to RHD, etc
2) If buying locally are you buying from a REPUTABLE manufacturer? Do not buy a "cheap" kit on ebay, hint: search this forum
3) what is important to you in the kit? Do you care more about having "just the right" body shape (to your taste and eye) or is ease of assembly more important? I'm not saying the two don't go together, but for some people the body shape is the deciding factor (they're all subtly different)
4) What is your engine choice (allowing for ADR) - not all kits easily accept all engines
5) Do you want real knock-offs/spinners? Some kits are designed for this and some are not and require custom fabrication. Again, it's do-able, but more work/expense on these kits
6) Do you want a period 15" wheel or larger 17/18? Again, some kits are designed for a 15" option and some preclude the use of 15" due to brake size.
7) Does all the above not matter to you and the most important is something like price or after-sales support?

If you can answer these questions honestly then your choice will be pretty much made for you.

HTH