Got the chance to get a hawkeye rb320 but my question is what is the difference from the widetrack blob with ppp to the hawkeye rb320 with similar spec? Is it really worth it? Anyone done it? Is it worth me changing?

 

RB320 is a higher tax band and has the unreliable 2.5 litre engine which are the 2 negatives I can think about, plus you pay the extra premium because its a limited edition car.
If you dont mind/look past the negatives compared to your widetrack blob STi then go for it, I do think the RB320 is a good looking car and not as common as say a wr blue blob STi.

 

From memory:

Different interior trim to seats
BHP up from 300 (PPP) to 320
but the biggest improvement was to the chassis with bilstein dampers and RB320 specific prodrive springs that is about the best setup for British roads