UTCIS stepper motor for metering pin and eliminate the flap in the way of the airflow and CPR?
$2500...not exactly TB cheap
To be fair you'll be half way to that even doing a lot of DIY with a basically sorted MSEFI everything, but $2500 is ~5x the price of the average TB lowered lowlife cockroach all up front in a chunk.
220-240whp is possible without much of any compromise. Don't bother changing the cam if you can get away not doing so.
On the bright side, even strangled by the stock K-jet, the rest of the chassis, brakes, suspension, drivetrain will struggle to stay in 1 piece ~220-240whp and 300something-lbs.
After which point, it often gets exponentially more costly to have a well sorted DD/street legal car that's ~half as comfortable, safe, and/or reliable as ~300+hp cars sold in the last decade...
...assuming you get though a thorough stage 0 of a 32+ year old car with a bunch of OE/decent quality parts for it being NLA now, and much of the rest being likely 32 years old and tired/worn out.