Delco dizzy caps and rotors

[Ben Hutchings]

Hi, I need a new Delco 6 dizzy cap, mine has pitting around electrodes and some cracked plastic which doesn't seem great! I think it's part GDC109.

Also need a rotor or two (part GRA110). I hear both of these items can be poorly manufactured and some have had dead-on-arrival parts. 

Any suggestions for trusted suppliers or info on whether I should be trying to find NOS bits?

Cheers!