4A-GE + Individual thotlle bodyes

[ZaX]

Please help us with some good info about 4A-GE + ITB.

Our member, Ivica aka Pero, would like to do this modification, but we can not gather enough of good information about this topic. Fair amount of money is in question, so we don't want to make any mistakes.

Ivica has standard rebuilt 4A-GE blue top in his Levin. It's MAP sensored, TVIS, big port engine, TRD head gasket, A'pexi intake and 5zigen exhaust manifod + straight thru exhaust pipe.

Planed upgrades are:
camshafts 288IN/288EX
adjustable cam pulley x 2
valve springs
Individual throtlle bodyes
Injectors
Some kind of after market ECU

With the above mods, this should be very good and powerful engine.
Targeted power is 170-180hp with good amount of torque in mid and high revs (we don't want 200hp with very narrow poweband, pero likes drifting so torque is more important).
This car would be driven 10-15 times to track per year, rest of the time it would be daily comuter.


Questions and doubts i have:
How does the cam lift afects the manner of engine? What's the differenc btw 288 7.9mm lift cam and 288 8.5mm lift cam?

Valve springs, do we need whole set (shims + buckets), or are the only springs enough? I know about the yaris bucket "hack", but what kind of buckets to order?
http://www.toda-racing.co.jp/product/one...4ag-3.html
http://www.club4ag.com/faq%20and%20tech_...uning.html

ITB's, what make?
What is exactly needed? Vacuum plenum, throttle position sensor adapter? What type of funnels to use (lenght)?

Injectors
Do we need bigger injectors? AFAIR stock are 185ccm.

Aftermarket ECU's
Power FC is not officialy supported by A'pexi, but i saw ae86 running with it.
Freedom - does not have English translation.
Motec - too expencive
Autronic - same as motec.

Please make any good suggestions/web links to help us built this very special AE86.