Hey there whats up??
Well i did the 4g63 turbo mitsu swap in my car as well and i can tell you a few things. I know for sure that the engine can be made to fit in the scoupe somehow cause i was talking to the guy that runs overboost.com ages ago and he told me they did a 2G turbo talon engine in a 91 scoupe and busted low 11's in it. Now im not sure how it fit and how much mods they had to do.
I know for my 92 Sonata everything was a straight swap/plug in. 1G 4g63 bolted right in place alone with tranny and even using talon cv's. The turbo talon computer was a direct plus in to my stock Sonata harness as well.
Now i know the same set up i have would drop into the pre 96 Elantras92-95 cause it was the same engine but 1.8 as mentioned above. Now i dont think the wiring would work on the scoupe cause i think it wasnt based on the non turbo talon like the elantra and sonata.
No my suggestion is to swap in a turbo talon motor 90-91 6 bolt(stronger) and buy something like a SDS www.sdsefi.com stand alone electrnics, it will cost you about 950 U.S but you will have the car running right with no worries about stock harness working etc etc.
You going to have to buy the turbo ecu 200 bux a MAF 100 and a good fuel managment system like an APEXI which will run you like 300 U.S so thats over 500 U.S and not guarante u will run perfect.
Now with the SDS stand alone you dont need a MAF cause the SDS set up eliminates that. No need the talon ecu cause the SDS comes with its own ecu , harness sensors,coil pack etc etc everything u need man and its a fuel and ignition contril unit . Biggest bonus is that it has super good tuning capability with no lap top needed.
Check out the sds site u will see what i mean.
Hope i helped a little bit .
Turbo4g63 whats up man long time no talk dude **** !
<hr width=60% noshade size=1 align=left>92 Hyundai Sonata
1G Turbo Talon swap
Many more custom mods ! Check out pics and videos on my web page.