to put a 4g63t engine inside a 2001 mirage.. is it alot of money also what do i need to get for it

It is possible, and yes it cost alot of money unless you do all the work and work for yourself for free;)

how much r we talking here. and if you can tell me the information 2. thanks

Well first yu need to source the engine of choice . Most availible to yu would be the RFD 4G63T , altho the LFD 4G63T would fit yur engine compartment without altering the motor mount brackets areas. Thus teh RFD 4G63T yu can easilly find in the 89-92 Galant GSX and VR-4 and in the Mitsubishi Eclipse , eagle Talon and Plymoth Laser frum 1990-1999 . Being that said Yur engine bay would have to be changed frum an LFD (Left front designation) engine bay to an RFD . This would mean getting sumone to weld in motor mount upper stay brackets from yur car ,best would be frum an Eclipse or Galant (95-98) , use the Engine upper mount stay and then 4 thru holes would need to be drilled into the left hand side frame for the tranny mount bracket to be bolted in (look at 1990-1997 Galants, yull see wut im talkin about) Yull need the engine , wiring harness , power steering lines from a Galant , transmission if an automatic yull need an F5M33 , an F5M22 can take it for a little but eventually the 2nd gear will give out , thus the 3rd following. If an auto yull need an F4A33 . Radiator, intercooler , piping , AFM , fuel filter relocate, Galant front cross member bar and lower transmisiion mounts , exhaust piping and turbo down pipe . 1993-1996 Mitsubishi Mirage with 1.8 4G93 front axle shaft left side , the right hand side shaft is tricky , because yull most likelly need one that is 2 peice and uses the block brace. a 1992 1.6 DOCH Mirage can work but the block axle shaft bracket will need to be used for teh 4G63T engine. If you are going to use a diffrent set of hubs , as in Galant wheel bearing and 4 lug hub or Eclipse wheel bearing and 5 lug hub the axle shaft pairings will be sumwut easier. Alternator , underhood fuseblocks and panels with wiring , Definatlly the a brake upgrade , most likelly braking frum another models as in GS galants all wheel discs or Eclipse or older model Mirage with 4wheel discs. Im not sure if yur cars an auto and going a manual or wut but that adds to technicality if yu are doing so. So unless yu have and older VR-4 or Eclipse GSX that has been rear ended totalled and teh engine runs yu have yur hands full sourcing teh parts. Im sure ive missed sum things