With regards to the brakes (discs & pads) Chris, personally what I would do - and what I will be going when my brakes need re-newing, is get some decent pads, wether it be fast road or just normal pads, more then likely mintex ones is what I will be going for, and get some drilled and groved/slotted discs.
Fast road pads are generally good alrounders, they normally work from cold perfectly and work even better when warm. Where as track pads only work when warm...
Standard discs are good for everyday road use - meaning they dont see soaring temps ect like on a track day would where you do lots of high speed braking. The advantage of having drilled and/or grooved/slotted discs are that they disperse heat and water well. So they have an advantage in cooling over normal discs - which then reduces the risk of disc warpage, which is good for track use.
My views on the whole engine situation, do it to your 1.6... It's a well known fact they are very resticted with the standard air filter and exhaust setup and they respond well to mods too. Where as a puma lump struggles. You can chuck the same amount of money at a puma lump or a ze engine and the zs engine will be better off seeing more power and torque. Its fact. People are like 'wahey i got a 1.7 puma lump, it has variable vavle timing ect'... yeah but its it that good? No its really not. Look at honda engines, from a standard engine on vtec they can get an extra 60bhp... what does a puma get? Hardly anything. Im not going to rant on, there is no need, you are doing the right thing spending on your current engine.
And the ST150 calipers just go straight like a standard caliper would
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look forward to seeing it all sorted... fordfair the goal or ?
should sound the tits 
