bud, thanks for some info. would you know what cars used this engine or it's equivelent? no where in the lester steele book is it listed. no where in any davis literature have i found it. I have a model 96 (?) that we believe is a derby car, assembled and manufacturered by davis. any help on this would be great. is there any printed matter i can get my hands on that shows all the different continental engine numbers and letters with specs and where they were used? i am in need of some things and currently have a 6Y, 7R, 7U & 20L. thanks again....jim