Best Mods to start with

[Herman]

Please excuse these stupid messages but I'm new to the whole 260 thing.

I have come to it late in life (mid fifties) having had several performance cars in last 5 years inc, Audi TT mk1 and 2, Audi S4, Brabus roadster, MGB V8 to name some.

.....

Which one was the performance car ??