none of the systems are 3" u need to go custom for a 3" system like Lew says a 3" system wouldnt bolt to the downpipe, when i was looking it was around £600 - £700 for one so ended up making one myself!
one of the cams has 2 dots side by side and the other has 1 dot, you just need to line them up, did you put a service bolt in the inlet cam before you took it out?
Ive got both and would have the ep3 over the glanza as a daily driver, its a lot more comfy, less rattles, drives better, better engine, all imo, but sounds like you have you're heart set on another starlet!
I think your looking in the wrong places for insurance, I was just over £600 to insure 400 bhp with all mods declared (not gona list them cause theres too many) with sky insurance.
There's no point spending a lot of money on one if you're only gona use it a few times, I bought the draper one for when i was building my engine and it worked perfrct!
Honestly i cant remember, wasn't ebay as i wanted to avoid cheap copies, yeah i did torque mine, i only noticed mine were loose because i have my wheels on and off a lot, at first i thought it was my fault for not tighten the nuts up but it kept happening so just binned them.
this was about 2 3 years ago so maybe they are better now?
I had d1 nuts, they ended up stripping and kept coming lose, ended up buying these, look the same but there steel also i think u get different colours aswell http://www.ebay.co.uk/itm/HONDA-INSIGHT-JAZZ-Black-GT50-Extended-Wheel-nuts-Steel-12x1-5-/200908684495?pt=UK_Cars_Parts_Vehicles_Wheels_tyres_Trim_Nuts_ET&hash=item2ec7173ccf