Holy crap - a dry-sumped E-Series engine. Wtf, Details. NAO! Edit: ghey; saw from the picture link its a 4A-FE (almost visually identical, but look closely at the head casting and it becomes obviously different, as well as the front end layout of the engine), but still!
As Gaz said really - depends on your budget and what you want out of it; contact both regarding your requirements and what they can do Regarding turbocharging etc, search through this forum and whilst the full collection of resources aren't collected, there is still a reasonable amount - essentially to turbocharge the 5E you need the turbo components from the 4E-FTE (there's a thread here depicting how to turbocharge a 5E), to which you will need to add a 4E-FTE ECU/loom (would be easier than adapting the 5E ecu to work) and splice it into the existing wiring
That is a bit expensive - I may be getting a Twin plate OS Giken 5E clutch from my contact for only £26 more (plus delivery naturally). The OS Gikens are bullet proof though; perhaps a bit over specified but Mark (Nightspirit) is selling his Twin plate 4E kit?
No, but it can be used - the Starlet gearbox is far lower geared, and if yours is a C15X gearbox, has thicker gears too. You'll need the 4E-FTE clutch/flywheel
- you'll need to splice the wiring loom with the Paseos' one - front brakes are the same as the GT's - if you re-use your gearbox you won't need to swap driveshafts, use the GT's one and you "may" do - don't need a new front bumper if you shop properly for an intercooler