Are these really decent?

At least the price dropped from ~$280 on those. Why go to the trouble of complicated wiring to retro-fit the 1970's ECU when easier, cheaper and better to wire GM 8-pin HEI (many posts)? Even easier is the $45 Ningbo HEI distributor on ebay (SB & BB, no slant version) and an e-core coil. Keep reading.