1GGE has no knock sensors but the mounting points are there (2 needed in the block under he inlet), 1GGTE and 1GGZE do. 1GGE +T will struggle to run well with a stock 1GGTE ECU and you will need to run the knock sensors, compression will cause the ign to retard to far it will run flat and fail to produce much more power than the 1GGE did stock even with an over sized intercooler. best bet will be to install a set of 1GGTE or 1GGZE pistons and rods, rest of the engine uses very similar parts other than the head gasket. 1GGE gasket WILL NOT TAKE BOOST they just blow and yes I have tried this in a GA60 Celica I owned yeas ago. Still have a few bits for a gen 2 1GGTE floating around (engine loom, complete inlet manifold, injectors, TPS, knock sensors, reproduction steel carbon head gasket) and I think "SAM" has a set of pistons he got off me with a 1GGZE I sold him. Good luck. If you are running an early 1GGE the recirc system may not be compatible with the later stuff. don't forget the fuel pump and a larger radiator might be required to.