Yes its nice to make 600hp between 5000 and 7000rpm.
You know what it takes to spool a pair of turbo's like that with 183ci? I'd rather take a larger displacement motor, small turbo's and over 600ft lbs at 2200rpm, like my twin turbo LS1
BTW, most big power Supra's are singles, no diff in a single or twin, all that matters is airflow and packaging.
I've owned and driven a large turbo(.68 A/R T3/4) and a small motor, 1.8l...made great power, once it spooled up...
As an owner of a 680hp LSx(Camaro), a 340hp LSx(93 RX7) and a 450hp LSx(Corvette) I'd go with one in a heart beat, no pun intended.
I've had LSx's with spray, turbo's, and NA. My current motor is NA and about 450hp. Its super reliable with about 35 hours of hard track driving on it and 40,000 miles of regular driving.
They are light, parts have become relatively inexpensive and you can make silly power NA.
The stock GM engine management is excellent and the ability to tune is great also. Not sure if someone makes a stand alone trans controller for the Chrysler trans but then again just use a GM trans with the motor and a single controller.
2000 4.7l Grand Cherokee Laredo
2000 Pewter Corvette