Hi mercurygreyrsturbo
If you where talking about a standard virgin engine, without any mods, then i would start by making sure it was running upto standard spec/power. so many people get on the rollers and find out they are running under standard power figures, IE that episode of topgear with the old sports cars
After that the world is your oyster. You are best off finding a decent local garage that know about cossies and check out there stage 1 thru 5 packages. that will give you a good ear mark for what to go for and even if you dont get them to fit the kit then striking up a good relationship with them is good for nice piece if advice, use of there ramps and maybe a wee bit of discount.
Ww