93 Caprice LTZ. 5.7 TBI coil relocation?

Have a Caprice LTZ, 5.7 TBI. Does anyone know if anyone makes a extention harness for the coil? Want to relocate coil to fender. Bought MDS coils, which is larger then stock coil, does not fit very good in stock location, can only use 1 holddown bolt. Is the coil wire just a plain wire or is it a resistance wire. If I have too, guess I could cut off and solder new wire on and make longer. Replaced becuase car would start breaking up at around 4200 RPM, new coil fixed problem. Thanks

Ron