couple of questions
that's a different name and number,who's harry?http://www.skylinesaustralia.com/forums/Brand-Cp-Forged-Pistons-t249129.html
are they 21 0r 22mm gudgeons (weren't they for Argo rods)http://www.skylinesaustralia.com/forums/Big-Hp-Package-4-Sale-Go-t246175.html
my money's on......
"The Gibson Motorsport Cams(as used in bathurst) run more duration on the exhaust and .25 more lift, Inlet 256 @ 9.5mm lift Exhaust 278 @ 9.75 mm lift,the cams where done at an advertised duration of .020"
wouldn't worry about taking them to the post office for a quote
just use the online calculator,if you have the dimensions,weight and postcodes it will be exactly how aussie post work it out when you are at the counter
don't want to be the bearer of bad news mate but only the bosch 044 pump is rated at 600hp
chances are this is an ebay fake
offer $100 as my car has way less than 600hp and so it may be ok