Sorry to ask such an anal question, and with not really much idea of what has been done to the engine, it could prove to be a pointless one but I can tell you the things it definitely has and perhaps someone has a G with similar mods!?
R1 Spec Charger
Chip and pulley (65mm)
tubular manifold
Ported and polished head
Induction kit
Full stainless exhaust
Possibly has bigger injectors. I dont know what ones they are but if someone could tell me whats standard on a G40 and I will go have a look on the weekend (Does it go by the colour of them?)
I am sure he said it had other stuff done, but I dont want to say it has when im unsure.
Like I said before, I am sure people ask this all the time and there is no definite answer, I am after a ball park figure more than anything else as I would like to get it on the rollers when its been sprayed anyway.
Thanks in advance!