What size turbo is perfect for a stock motor,stock cam and stock unported heads?I read that for a car going to be 95% street driven you shouldn't go bigger than the ta49/te44 because any bigger there would be to much volume of air for the stock heads,valves,cam ect.I see alot of people using PTE's new 62/62 billet turbo's with stock motors,I also see people using smaller turbo's with stock motors running just as fast.I know that it is not only the combo that makes these cars fast but the tune also.I am new to these cars and don't understand why someone would spend almost $2000(62/62 billet,BB) on these turbo's when you could get one for $600(te44 journal bearing) and go just as fast.I know that the new billet turbo's are stronger and ball bearing turbo's last longer,I think,but with tech.changing so fast in the turbo world the new billet turbo's could be absolete a year or two done the road and the old turbo tech. been getting it done for years.I would think you could take the saving,almost $1,400 and put it towards the tranny/rear end that would need to be done any way with the bigger turbo.Just trying to learn about these amazing cars and any info would be great.Thanks,ikle