I used the Taylor 8.5 mm Spiro-Core wire kit. I bought a pair of ratchet crimpers from Summit. They make really good looking crimps.

74 Challenger, bought it new. In 1978 I replaced the original 318 with a 446 and 727. Mild cam, Jardine headers, and Holley Sniper EFI.
New engine! 511" RB, Edelbrock Performer RPM heads, Eagle rotating assy, Comp hyd roller cam, Doug's 2" headers.