1) get a 5-speed and rebuild the TCase, R&R Clutch $2500 total
2) exhaust leak may be the J (EGR) pipe its really common $100
3) P/s Pump (OEM) $300 do it before it leaks on the smog pump.
4) They all need to be choked a little $0
5)Sound behind the steering wheel, no big deal
6) Gas...