Not sure if they're modified Bosch injectors but these are supposed to be some awesome injectors. They even have 2000cc ones. These ain't cheap for sure.
The 1000cc (high impedence) as a set are reasonably priced from Amazon. (not trying to promote any supplier..)
Amazon.com: Injector Dynamics Plug-n-Play 1000cc Fuel Injector Set 2000-2005 Honda S2000: Automotive
"I'm later on going to come up with something better than electric tape to protect the positive terminal from grounding out."
Try liquid electrical tape.
Amazon.com: Permatex 85120 Liquid Electrical Tape - 4 oz: Automotive