Looking for Nailhead coil suggestion

I'm going to use the entry level Crane XR-1 contactless distributor conversion on my 401 rod project and asking for advice on coil selection. Was going to use an Accel Super Coil only because I have a couple spare and have one hooked up to my 1954 Roadmaster nailhead. It fires right up and runs good with points ignition. I also have a Bosch GT40R super sports coil but you can see the physical difference in the two. I wonder if size matters here ? The Accel is a good coil but it's big and bulky.

 

Something like this :
https://www.summitracing.com/parts/...MI_9O-2d274gIVxLXACh3fSwWCEAQYAyABEgJ1XfD_BwE

it will fit in the coil spot.

 

I expect the Accel is a old traditional design with the wire simply wrapped
around a straight (open iron magnetic circuit) iron core. The Bosch obviously
has a more modern closed iron magnetic circuit, assembled after winding. I
would prefer the modern design, but best to read up on the recommended
coils for your system. Bruce Roe

 

Thanks. Might have to go all out and buy an MSD blaster coil or similar.

 

I have the Pertronix contactless Kit and a flame thrower coil on my 401", with direct 12v from the battery, and it works and has done at least a couple of years..