ItsTheRS

Hi all, ive been referred here to ask this, as i understand you guys know alot about trans swap etc... I have a '89 RS sedan, it currently has the original EJ20, 5spd that it comes out in. Now i think time has come and i want to strip it and rebuild it. Im looking to put a 6spd mt in it but i dont know how well this will work, suggestions from anyone with good knowledge or experience ??? Plan is to get over 800hp with a rebuilt engine or a newer engine. Thanks