Hi, I posted before bu nobody replied. Will the msd 7al ignition setup work good on the z cars. I see people buying the 6al, but not the 7al. is it the price difference. the 7al is supposed to be better. Should i get it. price is cheap, so trhats not an issue. also will it work with a eeearly single point distributor, converted to the magneticp pickup, by pertronix?