75 x8 800 mag/cdi heads

[lwb140]

so the update kit to convert a 75 x8 or 800 to cdi came with new heads , does anyone know what the difference in heads was , does anyone know the casting numbers to tell the difference ? was there a performance advantage ? thanks wade

[harleysportster]

I would think the same type as the 76 440 Cyclone. I know the tin engine shroud is different which may explain the different part numbers of the heads between the 800 update and the Cyclone.