Cost of various mod's & insurance implications

[browndog]

Ive decided to slowly mod my au2 futura rather than by a newer falcon. Decision was aided by forking out $1600 on new steering rack and various other repairs. Also the big Falc' is just such a great honest ride and I reckon the controversy over styling and lower sales make the car more of a thinking man's car!

Just want an estimated cost of the following mod's:


Headers & 2 1/2 exhaust and lowering with superlows. Also are the insurance implications for these mods?

Cheers Lads