This is interesting.
I just did the same recently with a 35DLM8 with the amplifier on the dist body. Yesterday I tested a spare 35DE8, the first gen Opus which is the type I am using at the moment. This with my 1.6 ohm coil gave massive sparks.
I am toying with the idea of either fitting the 35DLM8, removing the ballast resistor and keeping a spare amplifier in the tool kit, or, giving the 35DE8 a good service and throwing that in the boot, and making up a ballast by pass fly lead, so either way I have a get - you - home fix in the event of ignition failure on a long run / rally.