If youre serious about needing coilovers over a decent shocks/springs setup i.e you do alot of track use, i'd just save up rather than going budget. MeisterR's are cheapER.
Its a list of verified power outputs, its just a case of whos contributed. Id be in around 44th if i put my figures on there as it stands at the moment. Would no doubt be a different story if others did too
If its done well it can look ok. I say ok as imo you cant beat a good paint job, plus someone i knew had hus vts wrapped n it peeled after a few months
Full service incl. cambelt
Sort out stiff gearchange
New brake pads, uprated brake lines
Uprated clutch
Piggyback ecu
Walbro fuel pump
Get it all mapped n set up, drive it, wait to get bored then who knows
Im no expert but to get what youre describing the car would be overfuelling and from what i understand this is a bad thing. I would imagine the noise from the vxr is more to do with design of the exhaust
Im planning a piggback and uprated fuel pump anyway but may have to move them up the list lol i dont drive my car hard very often and never for very long so hopefully will stay in one piece til then