Any Bosch 150 injectors should fit IIRC (in the middle of the part #, xxxx 150 xxx). The 155 injectors are too short, but can be persuaded to fit.
The yellow 19# Bosch injectors are installed in many Ford V8s, from Crown Vics to Econolines to Mustang GTs. Don't go after the older CFI single-point setups. Look for the 'cash for clunkers' cars...I've had the best luck there. They have the right impedance too.
I'll bet turbo cars would be a good place for uprated injectors, but I'd worry that exposure to heat soak might wear them out.