Keep it n/a unless you want to throw a shitload of cash into a bottomless pit called 7mgte / na-t. I've swapped mine for a turbo engine which i had to rebuild. But then the problems started to arise, turbo shot, what turbo, bigger turbo, bigger injectors, bigger pump, piggyback computer, turbotimer, lexus afm, wideband and the list goes on and on.
I'm 2 years into this and guess what... i still haven't got half the parts i need to get it running... at all. So far i spend a shitload on it, 1.5k on the rebuild, 2k on turbo, injectors and turbotimer (+shipping to the netherlands

) and i'm looking at another 1-1.5k just for the piggyback, wideband and fuelsupply.
Trust me, if i had thought about it twice 2 years back.... i would've rebuild my n/a.... for the 4th time. (1st hole in block, 2nd rodknock, 3rd rodknock, 4th pistonslap - all in 30k km

). But then again i'm glad that in, let's stay optimistic, half a year i get to beat my neighbors porsche (boxster S) right back into yesterday (i hope

)