Hello, my ignition leads need a change, and I have seen the k1 leads fabricated by Kerr Nelson. They have quad core and 10mm cable. Are they any good or is best to buy a magnecor set?

I have between K1 leads or a set of magnecor KV85.

 

I've been told that 10mm leads put up too much resitance and actualy reduce the spark strength, and 8mm is the way to go.
Just what I have heard though, although Magnecor are 8mm leads.

 

Lead size doesn't denote resistance, Kerr Nelson are good leads, used them on a few cars myself.
Magnecor are also excellent, and would be my first choice.
tabetha

 

Thanks for your opinion, I am searching magnecor and K1 leads, and I have found a seller that have K1 in stock and sends to Spain, but I haven`t found any seller that will ship magnecor leads to spain.