you will be oK to use the speedway style cover if thats what your asking Rosco, so long as the internal side covers the front sprocket and the front section of the ring gear on the clutch hub. mAybe post your up and we can see what you have.
You also need to have the rear lower section of the frame/ wheel covered under the axles where it feeds onto the chain.
heres my old girl, shitty picture but you can see both and this was taken at mildura, vic so its all good. Some of the guys cut the tail section off from the 20 to 160 degree mark on the outer right hand side of the clutch surround to mirror the early steel ones which i still see used.
Basically You really need to enclose from fingers the section INSIDE of the primary chain.
![](http://i33.photobucket.com/albums/d88/munchboxlive/RIMG1031-1.jpg)