Jackd is one of the few that I've read about that have converted a 124 car with perceived success.
The guys at ackits.com converted a 124 car using bigger parallel flow condensor, dual aux fans and several other things and threw their hands in the air.
Everything else I've ever read indicated that this was one of the very worst candidates for conversion.
Jackd is this 41 degree vent temp at idle or at 2,000RPM with pressures stabilized. The worst performance situation for a converted car is usually at idle plus 81 degree ambient is not much of a test. The temp where I am today is 105 F and I would absolutely faint to see 41 degree vent temp from ANY converted 124 car sitting at a traffic light in Richardson, Texas today.