Smog

Hello! im new to these forums, so be gental :) Anyway, right now I have a 98 prelude with all the basic's, it runs good but im tired of FWD and it has no potentional. So im going to get a 90 240SX and right when I get im going to put a SR20DET and fix up whatevers wrong with it. But I was woundering if im going to be able to pass smoke? Do I need to do anything special once i get it swapped? Also I woundering what kinda times to expect with just the sr20 in it. Also im thinking about upgrading the turbo once i get it up and running nice but i was woundering if i need to do alot of internal work before I can. Any help would be great. Thank you :)

I heard that if you run a mixture of gas / methanol you will pass smog no matter what since methanol burns REALLY clean...

sr20 interals are good for like 400hp or some outrageus number like that.