modifications

[totality]

i just went to D&T performance exhausts and got a quote
all up it was 2500 for a
3" MB Stainless steel With extractors
SS induction upgrade
K&N Air filter
is this a good price and they told me i should gain around 30 kw at the wheels

[impressive]

best way, break it down
3" mandrel bent from the cats back is worth anywhere between 500-700
does it include a hi flow cat? theres 300 there
what type of extractors? generally find tri-y's are a bit more expensive than 4 into 1's
so anywhere from 450 - 900
ss induction kits are around 300 i believe
kn filter is 110

so the grand total could be 1360 - 2310

the only real labour is the extractors (and cutting/welding of cats)
that should take around 3hrs.
the rest is all bolt in stuff.

hope that helps