HC-C2 YK-1BF With 7666A-2-SPRD

Hi !

I'm building ? RV-7
I also have an opportunity to get :
HC-C2 YK-1BF With 7666A-2-SPRD (what is sprd ?)
As i found it's a 74"
It seems the 74 is for rv7a not taildragger.
What do you think ? Is anyone flying this ?
I will use this on a io-360-A1B6D 200 cv
Thanks for your help !

Regards,

Laurent