i used the high impedance 195500-2020 injectors for years. i had to rewire the resistor pack. they use stock 7m clips with some filing of the injector.
the tan 195500-1370 are low impedance, but you need new clips
they come from the fc turbo 2. but since that car uses 4 injectors, you will have to find 2 cars. the fd or last gen. uses 2 primaries and 2 secondary injectors iirc.
http://www.robietherobot.com/Storm/fuelinjectorguide.htm
the n/a used smaller injectors on the fc. all fd's were twinturbo
you can't change the flow rates of injectors. they can only be cleaned and tested. you want injectors with flow rates within 2% or less of each other.
the problem with finding used ones is that the spray patterns could be different b/c of their age and you are replacing your 19+ year old injectors with 17+ year old injectors. i had 8 total and sent them off to be checked when i first got them 5 years ago. about a month ago, i sent them off again to be checked and found that 2 were leaking internally, 5 were within 3% of one another and 1 was flowing 14% higher than the others. needless to say, i had the guy throw them away for me and now i have to start over and buy some proper 550's.
. I'm just glad I found a less expensive way to get a set of 550s.