rollacosta

Hi guys, jus a question from tha new kid on tha block what engine conversions could i do to a ae82 seca? i already got the 4age twin cam 16 in it but I'm lookin for sumthin a bit faster aye like a 20 valve or a 4agze. they are the only engines i know of that jus drop straight in, well so to speak. any other engine that would fit?? and also i have no idea how to do an engine conversion, any advise otherwise I'm payin someone to put it in. a bit sad from a corolla lover i know but i jus dun wanna screw my car up and have a shell sittin there with a wrecked motor beside it. mind you i am keen to learn and have a go.